Jordi Cortadella Michael Kishinevsky Dmitry Bufistov Josep Carmona Jorge Júlvez Elasticity and Petri Nets. 221-249 2008 1 T. Petri Nets and Other Models of Concurrency http://dx.doi.org/10.1007/978-3-540-89287-8_13 journals/topnoc/2008-1 db/journals/topnoc/topnoc1.html#CortadellaKBCJ08