1. The analysis of distributed systems by means of predicate/transition-nets;Genrich,1979
2. A method to compare the descriptive power of different types of Petri nets;Jensen,1980
3. Liveness in Petri nets;Lautenbach,1979
4. Petri nets;Peterson;Comput. Surveys,1977
5. Concepts of net theory;Petri,1973