Carl Adam Petri.
Nets, time and space.
Theoretical Computer Science, 153(1-2):3-48, 1996.
@ARTICLE{Petri96, AUTHOR = {Petri, Carl Adam}, EDITOR = {Maurice Nivat and Grzegorz Rozenberg}, JOURNAL = {{Theoretical Computer Science}}, NUMBER = {1--2}, PAGES = {3--48}, TITLE = {Nets, Time and Space}, VOLUME = {153}, YEAR = 1996 }