Lernplattform eStudy: Going Web 2.0. - Timo Ochs; Klaus Quibeldey-Cirkel; Jörg Rieger (DeLFI Workshops, 2007)

How Does Repetition of Signals Increase Precision of Numerical Judgment? - Eike B. Kroll; Jörg Rieger; Bodo Vogt (Brain Informatics, 2010)