1. Cerans, K., Jonsson, B., Tsay, Y.-K.: Algorithmic analysis of programs with well quasi-ordered domains. Inf. Comput. 160(1–2), 109–127 (2000)
2. Blondin, M., Finkel, A., Haase, C., Haddad, S.: Approaching the coverability problem continuously (2015). CoRR,
abs/1510.05724
3. Lecture notes in Computer Science;L Bozzelli,2011
4. Cardoza, E., Lipton, R.J., Meyer, A.R.: Exponential space complete problems for Petri nets, commutative semigroups: preliminary report. In: Symposium on Theory of Computing, STOC, pp. 50–54 (1976)
5. David, R., Alla, H.: Continuous Petri nets. In: Proceedings of the 8th European Workshop on Application and Theory of Petri nets, pp. 275–294 (1987)