If you do not know much about Petri Nets, then these simple tools
may provide a quick impression on the basics.
Surveys
Questionnaire for a Taxonomy of Petri Net Dialects (May 2000)
The purpose of this survey is to collect characteristics of
currently used Petri Nets. This is helpful for defining a common
interchange format for Petri
Nets models (part of the standardisation effort).
Performed by R. Bastide, D. Buchs, M. Buffo, F. Kordon, and O.Sy.