For those wondering about practical application, here's two quick examples on use with distributed, problem solving and web applications. They're both doing precise models with a focus on deadlock prevention.<p><a href="http://www2.cs.siu.edu/~rahimi/papers/2.pdf" rel="nofollow">http://www2.cs.siu.edu/~rahimi/papers/2.pdf</a><p><a href="http://www.sersc.org/journals/IJGDC/vol8_no5/13.pdf" rel="nofollow">http://www.sersc.org/journals/IJGDC/vol8_no5/13.pdf</a>