El Hichami, Outman, Mohamed Naoum, Mohammed Al Achhab, Ismail Berrada, and Badr Eddine El Mohajir. 2015. “An Algebraic Method for Analysing Control Flow of BPMN Models”. International Journal of Recent Contributions from Engineering, Science & IT (iJES) 3 (3):pp. 20-26. https://doi.org/10.3991/ijes.v3i3.4862.