Freitas, Romulo, Raimundo Barreto, and Paulo Maciel. " Analysis of Real-Time Scheduling Problems by Single Step and Maximal Step Semantics for Time Petri Net Models." Anais do III Simpósio Brasileiro de Engenharia de Sistemas Computacionais, Niterói/RJ, 2013. SBC, 2013, pp.107-112.