1. S. Abramsky, What are the fundamental structures of concurrency? We still don’t know! Electron. Notes Theor. Comput. Sci. 162, 37–41 (2006)
2. P. Baldan, N. Coceo, A. Marin, M. Simeoni, Petri nets for modelling metabolic pathways: a survey. Nat. Comput. 9(4), 955–989 (2010)
3. M. Bremer, In the Shadow of the Holocaust – The Changing Image of German Jewry After 1945 (United States Holocaust Memorial Museum, Washington, 2008)
4. E. Fredkin, T. Toffoli, Conservative logic. Int. J. Theor. Phys. 21(3), 219–253 (1982)
5. G. Haus, A. Rodriguez, Music description and processing by Petri Nets, in Advances in Petri Nets, ed. by G. Rozenberg. Lecture Notes in Computer Science, vol. 340 (Springer, Berlin, 1988), pp. 175–199