The impact of motion in virtual environments on memorization performance. - Polina Häfner; Christina Vinke; Victor Häfner; Jivka Ovtcharova; Wolfgang Schotte (CIVEMSA, 2013)

Methodology for Immersive Emotional Assessment of Virtual Product Design by Customers. - Jurica Katicic; Polina Häfner; Jivka Ovtcharova (EGVE/EuroVR, 2013)

Semi-automated Ontology Population from Building Construction Drawings. - Polina Häfner; Victor Häfner; Hendro Wicaksono; Jivka Ovtcharova (KEOD, 2013)

Ontology Development towards Expressive and Reasoning-enabled Building Information Model for an Intelligent Energy Management System. - Hendro Wicaksono; Preslava Dobreva; Polina Häfner; Sven Rogalski (KEOD, 2013)

Methodology to Develop Ontological Building Information Model for Energy Management System in Building Operational Phase. - Hendro Wicaksono; Preslava Dobreva; Polina Häfner; Sven Rogalski (IC3K, 2013)

Teaching Methodology for Virtual Reality Practical Course in Engineering Education. - Polina Häfner; Victor Häfner; Jivka Ovtcharova (VARE, 2013)

Interactive Visualization of Energy Efficiency Concepts Using Virtual Reality. - Polina Häfner; Julia Seeßle; Jana Dücker; Matthias Zienthek; Filip Szeliga (EuroVR, 2014)

New Techniques for Hand Pose Estimation Based on Kinect Depth Data. - Simon Hummel; Victor Häfner; Polina Häfner; Jivka Ovtcharova (EuroVR, 2014)

Experiencing Physical and Technical Phenomena in Schools Using Virtual Reality Driving Simulator. - Polina Häfner; Victor Häfner; Jivka Ovtcharova (HCI (15), 2014)

TechViz XL helps KITs Formula Student car "become alive". - Benjamin Bayart; Alexis Vartanian; Polina Häfner; Jivka Ovtcharova (VR, 2015)

Methodology for Emotional Assessment of Product Design by Customers in Virtual Reality. - Jurica Katicic; Polina Häfner; Jivka Ovtcharova (Presence Teleoperators Virtual Environ., 2015)

Methodology for Efficiency Analysis of VR Environments for Industrial Applications. - Jana Dücker; Polina Häfner; Jivka Ovtcharova (AVR (1), 2016)

Serious Game Concept to Promote Citizen Engagement for the Energy Transition Using Virtual Reality and Web Platforms. - Felix Longge Michels; Laura Müller; Victor Häfner; Polina Häfner (IMCL, 2021)

Mobile Telepresence Robots in Education: Strengths, Opportunities, Weaknesses, and Challenges. - Maria A. Perifanou; Anastasios A. Economides; Polina Häfner; Thomas Wernbacher (EC-TEL, 2022)

Limits and Benefits of Using Telepresence Robots for Educational Purposes. - Polina Häfner; Thomas Wernbacher; Alexander Pfeiffer; Natalie Denk; Anastasios A. Economides; Maria A. Perifanou; Andre Attard; Clifford De Raffaele; Helena Sigurðardóttir (ICL (2), 2022)

Immersive Hand Instructions in AR - Insights for Asynchronous Remote Collaboration on Spatio-Temporal Manual Tasks. - Anjela Mayer; Augustin Rungeard; Jean-Rémy Chardonnet; Polina Häfner; Jivka Ovtcharova (CIVEMSA, 2023)

Using Collaborative Immersive Environments and Building Information Modeling Technology for Holistic Planning of Production Lines. - Sebastian Amann; Nicolai Beisheim; Polina Häfner; Victor Häfner; Kevin Kastner; Anjela Mayer; Felix Longge Michels; Tobias Ott (TE, 2023)

An Adaptive Learning Environment for Industry 4.0 Competencies Based on a Learning Factory and Its Immersive Digital Twin. - Polina Häfner; Viktoria Bergmann; Victor Häfner; Felix Longge Michels; Michael Grethler; Abhijit Karande (CSEDU (1), 2024)

A Framework for Intelligent Virtual Reality Tutoring System Using Semantic Web Technology. - Victor Häfner; Tengyu Li; Felix Longge Michels; Polina Häfner; Haoran Yu; Jivka Ovtcharova (CSEDU (2), 2024)

Semantic Web-Enabled Intelligent VR Tutoring System for Engineering Education: A Theoretical Framework. - Victor Häfner; Tengyu Li; Felix Longge Michels; Polina Häfner; Haoran Yu; Jivka Ovtcharova (VR Workshops, 2024)

Leveraging Virtual Prototypes for Training Data Collection in LLM-Based Voice User Interface Development for Machines. - Polina Häfner; Frithjof Eisenlohr; Abhijit Karande; Michael Grethler; Avik Mukherjee; Nhung Tran (AIxVR, 2025)

Accelerating the Development of Machine Voice User Interfaces with Immersive Environments. - Polina Häfner; Frithjof A. I. Eisenlohr; Felix Longge Michels; Abhijit Karande; Michael Grethler (VR Workshops, 2025)

PolyVRGeo: Immersive Engineering Toolkit for Deep Geothermal Energy. - Victor Häfner; Polina Häfner; Felix Longge Michels; Florian Bauer; Michael Grethler (VR Workshops, 2025)