Rogatynskyi, R., R. Hevko, Y. Nykerui, O. Dmytriv, and R. Rozum. “The Dynamic Simulation Model of Apples Contact Interaction”. Bulletin of the Karaganda University. Mathematics Series 96, no. 4 (December 30, 2019): 99–108. Accessed September 2, 2025. http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/438.