Figures:
See the Course Notes on Hypermedia Models.
Articles (available in page image form):
See the February 1994 CACM articles by:
Halasz and Schwartz summarizing the Dexter Model,
Gronbaek and Trigg about design problems with the Dexter Model, and
Hardman, Bulterman and Rossum about the Amsterdam model.
Other articles of interest in that issue include:
Gronbaek and Trigg's short introduction,
Gronbaek, Hem, Madsen, and Sloth about Dexter and cooperation, and
Leggett and Schnase about implementation concerns with Dexter.