Communities - The Role of Technology. - Johannes Hummel; Ulrike Lechner (ECIS, 2001)

The Community Model of Content Management. - Johannes Hummel; Ulrike Lechner (I3E, 2001)

Social Profiles of Virtual Communities. - Johannes Hummel; Ulrike Lechner (HICSS, 2002)

Business Models and System Architectures of Virtual Communities: From a Sociological Phenomenon to Peer-to-Peer Architectures. - Ulrike Lechner; Johannes Hummel (Int. J. Electron. Commer., 2002)

Open Source Software and Electronic Markets - Preface to the Special Section. - Arnold Picot; Marina Fiedler; Johannes Hummel (Electron. Mark., 2004)

Editorial. - Hans-Dieter Zimmermann; Lucia Pavlikova; Beat F. Schmid; Arnold Picot; Marina Fiedler; Johannes Hummel (Electron. Mark., 2004)

Towards Interacting with Force-Sensitive Thin Deformable Virtual Objects. - Johannes Hummel; Robin Wolff; Janki Dodiya; Andreas Gerndt; Torsten W. Kuhlen (ICAT/EGVE/EuroVR, 2012)

An Evaluation of Open Source Physics Engines for Use in Virtual Reality Assembly Simulations. - Johannes Hummel; Robin Wolff; Tobias Stein; Andreas Gerndt; Torsten W. Kuhlen (ISVC (2), 2012)

Comparing three interaction methods for manipulating thin deformable virtual objects. - Johannes Hummel; Robin Wolff; Andreas Gerndt; Torsten W. Kuhlen (VR, 2012)

An evaluation of two simple methods for representing heaviness in immersive virtual environments. - Johannes Hummel; Janki Dodiya; Robin Wolff; Andreas Gerndt; Torsten W. Kuhlen (3DUI, 2013)

An interactive virtual reality system for on-orbit servicing. - Mikel Sagardia; Katharina Hertkorn; Thomas Hulin; Robin Wolff; Johannes Hummel; Janki Dodiya; Andreas Gerndt (VR, 2013)

Cirque des bouteilles: The art of blowing on bottles. - Daniel Zielasko; Dominik Rausch; Yuen C. Law; Thomas C. Knott; Sebastian Pick; Sven Porsche; Joachim Herber; Johannes Hummel; Torsten W. Kuhlen (3DUI, 2015)

A lightweight electrotactile feedback device for grasp improvement in immersive virtual environments. - Johannes Hummel; Janki Dodiya; Laura Eckardt; Robin Wolff; Andreas Gerndt; Torsten W. Kuhlen (VR, 2016)

VR/AR Input Devices and Tracking. - Paul Grimm; Wolfgang Broll; Rigo Herold; Johannes Hummel; Rolf Kruse (Virtual and Augmented Reality, 2022)