Kabylbekov K.A., Abdrakhmanova Kh.K.-, Vintaykin B.Е., P.A.Saidakhmetov, и Issaev Ye.B.-. «CALCULATION AND VISUALIZATION OF A MAN PARACHUTING DOWNWARD». Academic Journal of Physical and Chemical Sciences, no. 5 (октябрь 15, 2021): 210–218. просмотрено декабрь 13, 2025. http://89.250.84.46/reports-science/article/view/2642.