\input zb-basic \input zb-ioport \iteman{io-port 70000035} \itemau{Boucheneb, Hanifa; Barkaoui, Kamel} \itemti{On interleaving in ${P,A}$-time Petri nets with strong semantics} \itemso{INFINITY, 17-31 (2010).} \itemcc{} \itemut{} \itemli{doi:10.4204/EPTCS.39.2} \end