Interactive Learning Programs for UNIX-Machines - First Results of the COLOS Project. - Hermann Härtel (ICCAL, 1990)

The didactical potential of modern workstations for teaching science and technology. - Hermann Härtel (Computer Mediated Education of Information Technology Professionals and Advanced End-Users, 1993)

A Computer-Supported Course in Mechanics. - Hermann Härtel; Michael Lüdke (CALISCE, 1996)

Support for Simulation-Based Learning: The Effect of Assignments in Learning about Transmission Lines. - Ton de Jong; Hermann Härtel; Janine Swaak; Wouter R. van Joolingen (CALISCE, 1996)

Das OLPC-Pilotprojekt in Äthiopien. - Hermann Härtel (LOG IN, 2009)