Mühlhäuser, Max and Richartz, Martin (1995):
Instructional Strategies and Processes.
In: Cooperative Computer-Aided Authoring and Learning, pp. 273-291, Boston, Kluwer, ISBN Print ISBN 978-1-4613-5949-4 Online ISBN 978-1-4615-2253-9,
DOI: 10.1007/978-1-4615-2253-9_12,
[Book Section]

Blakowski, Gerold and Coyle, Kathleen and Dirnberger, Josef and Dürr, Martin and Mühlhäuser, Max and Neidecker-Lutz, Burkhard and Richartz, Martin and Ruedebusch, Tom and Schaper, Joachim and Spanachi, Florin and Tallett, Paul and Varsek, Igor (1989):
NESTOR - Requirements and Architecture.
(Technical Report DEC-TR-6), [Report]