Ibragimov U.М., Nyssanov Ye.А., Kurakbayev Zh.S, Kozhabekova P.A., and Kemelbekova Zh. “Sufficient Conditions in the Collision Avoidance Problem under Geometrical and Integral Limitations on Control”. World Journal of Pharmaceutical Sciences, vol. 5, no. 2, Jan. 2017, pp. 89-95, https://wjpsonline.com/index.php/wjps/article/view/sufficient-conditions-collision-avoidance-geometrical.