Lecture #10 covered argumentation.
This is a classic paper on argumentation:
P. M. Dung On the acceptability of arguments and its fundamental role in nonmonotonic reasoning, logic programming, and n-person games Artificial Intelligence, 77, 321-357, 1995.while a great introduction to argumentation is
M. Caminada, A gentle introduction to argumentation semantics, Lecture Notes.which, despite the fact the author describes it as "Lecture Notes" is, in fact, a very readable paper from someone who understands this material better than most.