Master's Thesis
"TIG-based Petri Nets for Modeling Ada Tasking",
by Kari Forester, Lori Clarke, and Matthew Dwyer in
University of Massachusetts COINS Technical Report 91-69, June 1991.
Abstract
This paper presents a Petri net model for concurrent programs that
is based on an internal representation for concurrent programs
called task interaction graphs (TIGs). Comparisons are
made between these TIG-based Petri nets and an existing Petri net
model for Ada tasking.