People and a virtual doctor's visit: Learning about multiple acceptance aspects of a telemedical scenario. - Sarah Mennicken; Oliver Sack; Martina Ziefle (PervasiveHealth, 2011)

Older Adults' Perception of Costs and Benefits of Web-Based and Mobile PHR Technologies: A Focus Group Approach. - Oliver Sack; Richard Pak; Martina Ziefle (USAB, 2011)

ProFi: design and evaluation of a product finder in a supermarket scenario. - Ming Li 016; Katrin Arning; Luisa Bremen; Oliver Sack; Martina Ziefle; Leif Kobbelt (UbiComp (Adjunct Publication), 2013)

Evaluation of a Mobile Projector-Based Indoor Navigation Interface. - Ming Li 016; Katrin Arning; Oliver Sack; Jiyoung Park 002; Myoung-Hee Kim; Martina Ziefle; Leif Kobbelt (Interact. Comput., 2014)