BORISENKO, V. , USTENKO, S. і USTENKO І. 2021. ARBELOS AND ASSOCIATED CIRCLES. APPLIED QUESTIONS OF MATHEMATICAL MODELLING. 4, 2.2 (Жов 2021), 33-44. DOI:https://doi.org/10.32782/KNTU2618-0340/2021.4.2.2.3.