Potentials and Requirements of Mobile Ubiquitous Computing for Public Transport. - Holger Mügge; Karl-Heinz Lüke; Matthias Eisemann (GI Jahrestagung (2), 2007)

Integrated Solutions and Services in Public Transport on Mobile Devices. - Karl-Heinz Lüke; Holger Mügge; Matthias Eisemann; Anke Telschow (IICS, 2009)