Bartkevičius, S., V. Bagdonas, M. Juraška, and K. Šarkauskas. “Train Traffic Simulation With Coloured Petri Nets and Schedule Optimisation”. Elektronika Ir Elektrotechnika, vol. 59, no. 3, Mar. 2005, https://eejournal.ktu.lt/index.php/elt/article/view/10434.