How to Enhance Privacy and Identity Management for Mobile Communities: Approach and User Driven Concepts of the PICOS Project. - Christian Kahl; Katja Böttcher; Markus Tschersich; Stephan Heim; Kai Rannenberg (SEC, 2010)

Enhanced Privacy and Identity Management for Community Services - Demo of the PICOS Project. - Christian Kahl; Katja Böttcher; Markus Tschersich; Stephan Heim; Kai Rannenberg (ServiceWave, 2010)

Towards privacy-enhanced mobile communities - Architecture, concepts and user trials. - Markus Tschersich; Christian Kahl; Stephan Heim; Stephen Crane; Katja Böttcher; Ioannis Krontiris; Kai Rannenberg (J. Syst. Softw., 2011)