Lecture #20 was a seminar on "Communication"
There are no notes for this lecture
The reading assignment for this seminar was:
Yannis Labrou and Tim Finin, "Semantics for an Agent Communication Language", in Intelligent Agents IV: Agent Theories, Architectures, and Languages, M. P. Singh and A. Rao and M. J. Wooldridge, eds., Springer-Verlag, 1998.which you can find on Citeseer. Since this is the last seminar of the semester, I thought not bother with questions (at the risk of nobody reading the article).