Diploma theses, PhD theses and habilitations
Dr. Marco BEAUMONT, MSc.
Pursued venia docendi "Chemistry and applications of nano-structured celluloses and other polysaccharides"
Mentor: Thomas Rosenau
Dr. Hubert HETTEGGER, MSc.
Pursued venia docendi "Hybrid Material Chemistry"
Mentor: Thomas Rosenau
DI Dr. Oliver MUSL
Pursued venia docendi "Advanced analytical characterization of lignins and lignin derivatives"
Mentor: Thomas Rosenau, Antje Potthast
Elisabeth Billich, BSc. MSc.
Biobased Impregnation Resins for High Pressure Laminates
Supervisor: Antje Potthast
Dipl.-Ing. Markus Eder
Advanced cellulose characterization for fiber spinning
Supervisors: Antje Potthast, Thomas Rosenau
Stefanie Gross Belduma, BSc. MSc.
Tailoring molar mass of cellulose
Supervisors: Antje Potthast, Thomas Rosenau
Olga Ivanova, MSc.
Stabilizing lyocell dopes for safe and efficient cellulose fiber production
Supervisors: Thomas Rosenau, Hubert Hettegger
DI Nadine Kohlhuber
Structure-property-application relationships in technical lignins
Supervisors: Antje Potthast, Ivan Sumerskii, Thomas Rosenau
Mitsuharu Koide, MSc.
Functionalization of celluloses for high-strength fibers
Supervisor: Thomas Rosenau
Anna Lehrhofer, MSc.
Enantioseparation on non-conventional cellulose-based chiral phases
Supervisors: Thomas Rosenau, Hubert Hettegger, Hiroshi Kamitakahara (Kyoto University)
Ivan Melikhov, MSc.
Investigation of indigo and its degradation products’ influence on cellulose stability
Supervisor: Antje Potthast
Alaudini Alaudin Nurali, MSc.
Development of a fully biobased adhesive system for additive manufacturing of recyclable indoor walls
Supervisors: Falk Liebner, Ruper Wimmer (Institute of Wood Technology and Renewable Materials)
Timothy Omara, MSc.
Sources, Seasonal Variations, Trophic Transfer and Removal of Microplastics from the Ugandan Portion of Lake Victoria
Supervisors: Stefan Böhmdorfer, Christine Nagawa (Makerere University, Uganda)
Theodoros Petsoukis, MSc.
Cellulose derivatives and biomass-based NIPUs as binders
Supervisors: Thomas Rosenau, Hubert Hettegger
John Chrysostom Opedun, MSc.
Isolation, analysis, and valorization strategies of soda pulping effluent streams
Supervisor: Alexander Bismarck, Antje Potthast
Margeritha Ritscher, MSc.
Advancing the Compositional Analysis of Black Liquors
Supervisor: Antje Potthast
Hoai Tran, MSc.
Phytochemical Analysis of Seedy Banana
Supervisors: Stefan Böhmdorfer, Thomas Rosenau
Piyawan Yimlamai, MSc.
Insect-based nanochitin/protein complexes for materials
Supervisor: Antje Potthast, Thomas Rosenau, Marco Beaumont
DI Johanna Zieher
Strengthening strategies for specialty papers and cellulose-based filter products
Supervisors: Thomas Rosenau, Hubert Hettegger
René Rodrigues
New ways of transforming dialdehyde cellulose into thermoplastics
Supervisors: Antje Potthast, José Paulo Sequeira Farinha (Instituto Superior Técnico, Lisbon)
Martin Schäfferling
Novel all-cellulose hybrids by non-porous coating of porous matrix materials
Supervisors: Falk Liebner
Dipl.-Ing. Dr. Stefan BÖHMDORFER
Venia docendi "Biorefinery Analytics", 2022
Mentors: Thomas Rosenau, Antje Potthast
Dipl.Chem. Dr. Falk LIEBNER
Venia docendi "Biomaterial Chemistry", 2015
Mentor: Thomas Rosenau
Dipl.-Rest. Dr. Ute HENNIGES
Venia docendi "Paper Conservation Science", 2015
Mentors: Thomas Rosenau, Antje Potthast
DI Dr. David Budischowsky
Fluorescence labeling and quantification of C1-oxidized cellulose
Supervisors: Antje Potthast, Irina Sulaeva, Hubert Hettegger
Dr. nat. techn. Hajar Khaliliyan, MSc.
Characterization of Lignocellulosic Polymers using Spectroscopy and Chemometrics
Supervisors: Thomas Rosenau, Stefan Böhmdorfer, Antje Potthast
Dr. nat. techn. Muhamad Nur Ghoyatul Amin, MSc.
Method development for structural analysis of complex polysaccharides
Supervisors: Thomas Rosenau, Antje Potthast, Stefan Böhmdorfer
Dr. nat. techn. Takaaki Goto, MSc.
Exploring the Chemistry of Cellulose: Studying Nitrogen Fixation and the Effects of Chelating Agents on Cellulosic Materials
Supervisor: Thomas Rosenau
Dr. nat. techn. Jonas Simon, MSc.
Oxidative Modification of Cellulose: Access to Renewable Thermoplastics
Supervisors: Antje Potthast, Thomas Rosenau
DI Marcel Kluge
Contributions to overcome limitations in the synthesis of poly(ester amide)s from succinic acid and 2,5-furandicarboxylic acid
Supervisors: Falk Liebner, Tobias Robert (Fraunhofer Institute for Wood Research - Wilhelm Klauditz-Institute)
DI Dr. Gerhild Wurzer
Lignosulfonates – analysis, ammonoxidation and agricultural application
Supervisors: Thomas Rosenau, Antje Potthast
Dr. nat. techn. Laura Völkel, MA
Nanocellulose as Stabilizers for Damaged Paper
Supervisor: Antje Potthast
Dr. nat. techn. Cuong Viet Bui, MSc.
Synthesis and evaluation of polysaccharide-based chiral stationary phases for enantiomer resolution
Supervisors: Thomas Rosenau, Hubert Hettegger, Wolfgang Lindner (University of Vienna)
Dr. nat. techn. Anna Marie Hallasgo, MSc.
The synergistic effects of endophytic and arbuscular mycorrhizal fungi in plant health and nutrition
Dissertation in Cooperation with the Division of Plant Protection
Supervisors: Siegrid Steinkellner, Karin Hage-Ahmed, Stefan Böhmdorfer, Anna Keutgen
DI Dr. Paul Jusner
In-Depth Characterization of Thermally Stressed Electric Insulation Paper
Supervisors: Thomas Rosenau, Antje Potthast
DI Dr. nat. techn. Florian Bausch
Analysis of Ancient and Modern Papyri
Supervisors: Antje Potthast, Thomas Rosenau
DI Dr. Oliver Musl
Advanced Lignin Characterization
Supervisor: Antje Potthast
Mgr. Dr. nat. techn. Matthias Guggenberger, MSc.
Augmenting Biorefinery Analytics by Data Evaluation
Supervisors: Stefan Böhmdorfer, Thomas Rosenau
Dr. nat. techn. Stefano Barbini, MSc.
Selectivity Studies of Natural Compounds Extracted from Coniferous Bark by scCO2 and Characterization by GC-MS/FID and UPC2-QToF-MS
Supervisors: Antje Potthast, Thomas Rosenau
Dr. nat. techn. Oliver Sarosi, MSc.
Alternative Methods for the Production of Dissolving Pulp
Supervisor: Antje Potthast
Dr. Luyao Wang, MSc.
Lignin fractionation and utilization
Dissertation in cooperation with Åbo Akademi University Turku, Finnland
Supervisors: Chunlin Xu, Thomas Rosenau
DDI Dr. Christian Schimper
Advancing the Properties of Cellulosic Aerogels with Particular Focus on Cell Scaffolding Materials
Supervisors: Falk Liebner, Thomas Rosenau
Mag. Dr. nat. techn. Philipp Korntner
Advanced Methods in the Analysis of Technical Lignins
Supervisors: Antje Potthast, Thomas Rosenau, Markus Bacher
Dr. Wolfgang Hinterdobler, MSc.
Fungal Chemical Communication
Dissertation in cooperation with the Center Health and Bioresources of the Austrian Institutes for Technology
Supervisors: Monika Schmoll, Stefan Böhmdorfer
Dr. nat. techn. Sakeena Quraishi, MSc.
Photoluminescent and light weight porous materials from oxidatively modified cellulose for sensing and thermal insulation applications
Supervisors: Falk Liebner, Thomas Rosenau
Dr. nat. techn. Dennis Burger, MSc.
Silk fibroin - cellulose composite materials
Dissertation in Kooperation mit der Shinshu University Japan
Supervisors: Yasushi Tamada, Thomas Rosenau, Marco Beaumont
Dr. nat. techn. Sebastian España Orozco, MSc.
Characterization and Quantification of Wood Extractive during Sulfite Pulping and TCF Bleaching (Wood K-plus)
Supervisor: Antje Potthast
Dr. nat. techn. Julien Jaxel, MSc.
Tailoring of supercritical carbon dioxide technologies for the coloration of solid wood
Supervisors: Falk Liebner, Christian Hansmann (Wood K-Plus)
Dr. nat. techn. Arianna Lucia
Dialdehyde cellulose-based binder for mineral wool
Supervisors: Thomas Rosenau, Hendrikus Van Erwijnen (Wood K-Plus)
Dr. nat. techn. Grigory Zinovyev, MSc.
Advanced Molar Mass Characterization of Technical Lignins
Supervisors: Antje Potthast, Thomas Rosenau
Dr. nat. techn. Vebi Mimini, MSc.
Lignofoams: Potential for 100% Bio-Based Matrices and Resins
Supervisor: Thomas Rosenau
Dr. nat. techn. Manuel Becker, MSc.
Analysis of Complex Carbohydrate Mixtures
Dissertation in cooperation with the Department of Applied Plant Sciences and Plant Biotechnology
Supervisors: Astrid Forneck, Antje Potthast
DI Dr. Sven Plappert
Assembly of Nanocellulose Building Blocks into Anisotropic Membranes, Gels and Aerogels
Supervisor: Falk Liebner
DI Dr. nat. techn. Nele Zwirchmayr
Chromophores in pulp and paper: Approaches towards their degradation and detection mechanisms
Supervisors: Ute Henniges, Antje Potthast, Thomas Rosenau
Mag. Dr. nat. techn. Slavica Hell
Resource-Saving Approaches for Oxidation and Further Processing of Man-Made Cellulose Fibers
Supervisor: Antje Potthast, Thomas Rosenau
Dr. nat. techn. Irina Sulaeva, MSc.
Novel Approaches to Molar Mass Analysis of Polymers Derived from Renewable Resources
Supervisor: Antje Potthast, Ute Henniges, Thomas Rosenau
DI Dr. Josua Oberlerchner
Unconventional Methods for the Analysis of Carbohydrates in Biorefinery Streams
Supervisors: Antje Potthast, Thomas Rosenau
DI Dr. Andreas Schedl
Development of Sensitive and Enhanced Mass Spectrometric Methods for Analysis of Degradation Products from Aged Cellulose Matrices
Supervisors: Antje Potthast, Thomas Rosenau
Dr. nat. techn. Marco Beaumont, MSc.
Characterization and Modification of a Cellulose II Gel
Supervisors: Thomas Rosenau, Antje Potthast
Dr. Christian Hutterer
Evaluation of the HEM-Extra Process
Supervisor: Antje Potthast
DI Dr. Nora Odabas
Chemical Modification and Utilization of Paper Grade Pulp and Fractions Thereof
Supervisors: Ute Henniges, Antje Potthast, Thomas Rosenau
Dr. nat. techn. Hubert Hettegger, MSc.
Modification of biopolymers for improved wound healing
Supervisors: Thomas Rosenau, Antje Potthast
Dr. nat. techn. Nicole Pircher, MSc.
Tailoring of cellulosic aerogels for biomedical applications
Supervisors: Falk Liebner, Thomas Rosenau
Dr. nat. techn. Christine Nagawa, MSc.
Chemical Composition and Biological Activity of Essential Oils and Extractives from Selected Tree Species of Uganda
Supervisors: Stefan Böhmdorfer, Thomas Rosenau
DI Dr. Martin Siller
Oxidative Modifications of Cellulosic Fibres
Supervisors: Antje Potthast, Thomas Rosenau
Dr. nat. techn. Karl Michael Klinger, MSc.
Current Biorefinery Scenarios: Studies into Ammoxidation of Lignocellulosic Material and Periodate Oxidation of Cellulose
Supervisors: Antje Potthast, Thomas Rosenau
DI Dr. nat. techn. Bojan Stefanović
Mechanisms for Cellulose Modification - Degradation and Surface Modification
Supervisors: Antje Potthast, Thomas Rosenau
DI Dr. nat. techn. Gerald Ebner
Modification of Sustainable Resources and their Applications
Supervisors: Antje Potthast, Thomas Rosenau
Dr. Kyujin Ahn, MSc.
Sustainability of mass deacidification of library objects
Supervisor: Antje Potthast
Dr. Sharifah Nabihah Binti Syed Jaafar, MSc.
Utilization of Biomass in Biorefinery Approaches
Supervisors: Stefan Böhmdorfer, Thomas Rosenau
Dr. Huiqing Wang, MSc.
Synthesis, Characterisation and Properties of Quantum-Dotted Aerogels
Supervisors: Falk Liebner, Thomas Rosenau
DI Dr. nat. techn. Georg Pour
Ammonoxidation of ligneous matter, the fate of the incorporated nitrogen and CO2 fixation by the resulting artificial humic substances
Supervisors: Falk Liebner, Thomas Rosenau
Mag. Dr. nat techn. Michael Schrems, MBA
Green Refinery - Ionic Liquids as novel media for biomass processing
Supervisors: Antje Potthast, Thomas Rosenau
DI Dr. nat. techn. Elisabeth Lackinger
Novel ASA-substitutes in paper sizing based on renewable raw materials
Supervisors: Thomas Rosenau, Antje Potthast
Dr. nat. techn. Ilabahen Patel, MSc.
Studies into the chemoenzymatic modification of cellulose by the laccase/TEMPO system
Supervisors: Antje Potthast, Thomas Rosenau, Dietmar Haltrich
DI Dr. Emmerich Haimer
Supercritical CO2 for chemical engineering of renewable ressources
Dissertation at the Department of Material Science
Supervisors: Martin Wendland, Thomas Rosenau, Falk Liebner
DI Dr. nat. techn. Stefan Böhmdorfer
Studies into fundamentals of ortho-quinone methide chemistry
Supervisor: Thomas Rosenau
Dipl. Chem. Dr. nat. techn. Ivana Tot
Modification of residual hemicellulosic structures
Supervisor: Antje Potthast
DI Dr. nat. techn. Martina Opietnik
Synthesis of novel heterocyclic ligands for the human aryl hydrocarbon receptor
Supervisors: Thomas Rosenau, Alois Jungbauer, Falk Liebner
DI Dr. nat. techn. Karin Krainz
Mechanistic studies of chromophore formation in cellulosics
Supervisors: Thomas Rosenau, Antje Potthast, Falk Liebner
DI Dr. nat. techn. Elisabeth Kloser
Synthesis and oxidation chemistry of novel tocopherol-type antioxidants
Supervisor: Thomas Rosenau
Dipl. Rest. Dr. nat. techn. Ute Henniges
Cellulose analytics by fluorescence labelling and gel permeation chromatography
Supervisor: Antje Potthast
Dr. nat. techn. Anjan Patel, MSc. MPhil.
Oxidation chemistry of non-alpha-tocopherols and related model compounds
Supervisor: Thomas Rosenau
Dr. nat. techn. Yuko Yoneda, MSc.
Synthesis of novel cellodextrins as cellulose fragment analogues
Supervisor: Thomas Rosenau
DI Dr. nat. techn. Jürgen Röhrling
Oxidative modification and fluorescence labeling of cellulosic substrates
Supervisors: Paul Kosma, Antje Potthast, Thomas Rosenau
DI Dr. nat. techn. Jürgen Sartori
Investigations of alkaline degradation reactions of cellulosic model compounds
Supervisors: Paul Kosma, Antje Potthast, Thomas Rosenau
DI Dr. nat. techn. Christian Adelwöhrer
Investigations into the chemistry of phenolic antioxidants
Supervisor: Thomas Rosenau
DI Dr. nat. techn. Rainer Bohrn
Determination of carboxyl groups in pulps by fluorescence labeling
Supervisors: Paul Kosma, Antje Potthast, Thomas Rosenau
DI Dr. nat. techn. Immanuel Adorjan
Chromophore formation and carbohydrate conversions in the system NMMO/Cellulose (Lyocell Process)
Supervisors: Thomas Rosenau, Antje Potthast, Paul Kosma
DI Carolina Huber
Sulfite cooking of model wood extractives and analysis of their products
Supervisors: Antje Potthast
Luisa Baufeldt, MSc.
Investigation of Microbially Contaminated Papers with Diverse Hygroscipoic Properties
Supervisors: Antje Potthast, Ulrike Hähner
DI Markus Löcker
Modification of Kraft Lignin with Ozone
Supervisors: Antje Potthast
DI Agop Kabrelian
Synthesis and Evaluation of Chiral Stationary Phases Derived from Natural Compounds for Enantiomer Separation
Supervisors: Thomas Rosenau, Hubert Hettegger, Michael Schnürch (TU Wien)
DI Ágnes Dohovits
Effects of inoculations with endophytic, mycorrhizal and pathogenic fungi (Fusarium oxysporum) on tomato secondary metabolites
Supervisors: Karin Hage-Ahmed (Institute of Plant Protection), Stefan Böhmdorfer, Siegrid Steinkellner (Institute of Plant Protection)
DI Maximilian Lubitz
Sustainable Functionalization of Lignin for the Production of Biocolloids
Supervisors: Thomas Rosenau, Antje Potthast, Ewald Srebotnik, Marco Beaumont, Irina Sulaeva
DI Anna Schnegg
Effect of the Antioxidant Hydroxytyrosol on the Aging Behavior of Denim
Supervisors: Antje Potthast, Hubert Hettegger
DI Elisabeth Billich
Profiling of Functional Groups in Lignin by FTIR
Supervisors: Antje Potthast, Ivan Sumerski,Cordt Zollfrank (Technical University of Munich)
DI Johanna Zieher
Derivatization-NMR Techniques in the Analysis of Lignocellulosics
Supervisors: Markus Bacher, Anton Friedl (TU Wien), Thomas Rosenau
DI Christian Schuster
Quantification of Lignin in Pulping Liquors
Supervisors: Stefan Böhmdorfer, Antje Potthast
DI Nadine Kohlhuber
Preparation of Thermally Super-Insulating Cellulose I Aerogels: Up-Scaling and Optimization
Supervisor: Falk Liebner
DI Elisabeth Schaubmayr
Nanocellulose Composites
Supervisors: Marco Beaumont, Thomas Rosenau
DI Katharina Dorninger
Chemometric Models for the Analysis of Lignin
Supervisors: Antje Potthast, Ivan Sumerskii
DI Patrick Geiger
Chemical and mechanical analysis of Danubian Myriophyllum spicatum
Supervisors: Marco Beaumont, Thomas Rosenau
Mag. Ezgi Özkan
Secondary metabolite production during sexual development in Trichoderma reesei and its analysis by HPTLC and DESI-MS
Supervisors: Stefan Böhmdorfer, Monika Schmoll (AIT Bioresources)
DI Maria Pichler
Investigation of metabolite-based effects of T. asperelllum on M. laxa
Supervisors: Siegrid Steinkellner, Karin Hage-Ahmed, Stefan Böhmdorfer
DI David Budischowsky
Ozone bleaching of cellulosic chromophores
Supervisors: Thomas Rosenau, Nele Zwirchmayr
DI Gerhild Wurzer
Cellulose-Containing Materials for the Purification of Virus-Like Particles and Proteins
Supervisors: Marco Beaumont, Hubert Hettegger, Thomas Rosenau
DI Elisabeth Jahn
Cellulose/Silica Nanocomposites
Supervisors: Marco Beaumont, Thomas Rosenau, Stefan Böhmdorfer
DI Franz-Josef Pichler
Lignin decolourization
Supervisors: Stefan Böhmdorfer, Antje Potthast, Thomas Rosenau
DI Miriam Vogt
Fast track for the accurate determination of carboxyl groups and sulfonic acid groups in various lignins
Supervisors: Ivan Sumerski, Hubert Hettegger, Antje Potthast
DI Paul Daniel Jusner
Environmentally Benign Esterification of Lignocelluloses
Supervisors: Thomas Rosenau, Marco Beaumont
DI Mario Holzlechner
Lignin decolourization through oxidative and reductive bleaching
Supervisor: Stefan Böhmdorfer, Thomas Rosenau
DI Julian Selinger
Waste chicken feathers as raw material for carbon fibers
Supervisors: Herbert Sixta (Aalto University, Finnland), Thomas Rosenau
DI Oliver Musl
Chemical Effect during Modification of Kraft Lignin with Ozone under Alkaline Conditions
Supervisors: Stefan Böhmdorfer, Thomas Rosenau
Frauke Kikul, MSc.
Development of a Method for Quantification of Chromophores in Cellulosic Materials
Supervisors: Antje Potthast, Thomas Rosenau
Kristina Missbach, MSc.
Quantification of Lignin in Pulp
Supervisors: Ute Henniges, Antje Potthast
DI Erika Schaudy
Synthesis of Natural Antioxidants
Supervisor: Thomas Rosenau
DDI Urban Spitaler
Quantitative Analyse des Anthocyan- und Phenolgehaltes von Weizen (Triticum aestivum L.) mittels UV/Vis-Spektroskopie und HPTLC
Thesis at the Department of Crop Science
Supervisors: Heinrich Grausgruber, Stefan Böhmdorfer
DI Renate Kepplinger
Extraction and Modification of Lignins Obtained from Hydrothermally Treated Biomass
Supervisor: Falk Liebner
DI Christoph Wachholder
High-Performance Thin-Layer Chromatography of Wood Derived Sugars: Method Development and Validation
Supervisors: Antje Potthast, Stefan Böhmdorfer, Josua Oberlerchner
DI Julia Wenger
Cellulose Derived Chromophores in Pulp and Paper: Analysis with Atmospheric Pressure Ionization Mass Spectrometry and Gas Chromatographic Methods
Supervisors: Antje Potthast, Stefan Böhmdorfer
DI Jakob König
Physico-Chemical Processes upon Drying of Cellulosic Materials
Supervisors: Thomas Rosenau, Marco Beaumont
DI Christina Fuchs
Characterization of Anthocyanins in Blue Aleurone and Purple Pericarp Wheat Using HPTLC
Thesis at the Department of Crop Science
Supervisors: Heinrich Grausgruber, Stefan Böhmdorfer
DI Sven Plappert
Oxidative modification of cellulose as an approach towards transparent films and aerogels
Supervisors: Falk Liebner, Thomas Rosenau
DI Veronika Schreieder
Increasing the Potency of Mosquito Repellents with Cyclodextrins
Supervisors: Falk Liebner, Volker Sieber
DI Leander Sützl
Analysis of Resinous Residues
Supervisors: Antje Potthast, Stefan Böhmdorfer, Thomas Rosenau
DI Liu Fang
A novel sustainable encapsulation method using polyelectrolyte complex formation
Supervisors: Antje Potthast, Thomas Rosenau
DI Klaus Atzgersdorfer
Analysis of the Anthocyanin Composition and Antioxidative Potential of Purple Wheat Crossbreeds
Thesis at the Department of Crop Science
Supervisors: Heinrich Grausgruber, Stefan Böhmdorfer
DI Andreas Schedl
Analysis of volatile wound exudates
Supervisor: Antje Potthast
DI Josua Oberlerchner
Characterization of oligomeric cellulose derivatives
Supervisors: Antje Potthast, Ute Henniges
DI Michael Wagner
Nanofibrillation of Cellulose
Supervisor: Antje Potthast
DI Bernhard Mißbichler
Saccharification of Milled Aspen Wood
Supervisor: Thomas Rosenau
DI Philipp Vejdovszky
Impact of 1-ethyl-3-methyl imidazolium acetate as cellulose solvent on the activity of an endoglucanase from Trichoderma reseei
Supervisors: Antje Potthast, Thomas Rosenau
DI Nikita Aigner
Preparation and characterization of unaltered and mechanically reinforced bacterial cellulose aerogels
Supervisors: Falk Liebner, Thomas Rosenau
DI Gerhard Humer
Analysis of degradation compounds in the waste water of pulping processes
Supervisor: Antje Potthast
DI Ramona Dunareanu
Synthesis and characterisation of cellulose phosphate aerogels
Supervisors: Falk Liebner, Thomas Rosenau
DI Christian Schimper
Effect of alkali pre-treatment on Trichoderma cellulase treatments of cellulose fibers
Supervisor: Thomas Rosenau
DI Gerald Ebner
Studies into cellulose analytics
Diploma Thesis at the University of Technology, Vienna
Supervisors: Johannes Fröhlich, Antje Potthast, Thomas Rosenau
