Gatalo, R., Hodolič, J., Borojev, L., Zeljković, M., Klarić, R. and Zeljković, Željko 1993. SAPOR-s system for automatic programming of NC machines and systems. Journal of Production Engineering. 10, 10 (Dec. 1993), 13–33. DOI:https://doi.org/10.24867/JPE-1993-10-013.