Baidabekov А., Muradov Ш., Adilov П., and Tashimov N.E. Т. . Н. . “Curves of the Second Order - As Sections of Surfaces Second Order in Predetermined Parameters”. Рroblems of Engineering and Professional Education, vol. 38, no. 5, Mar. 2023, pp. 9-14, doi:10.32523/2220-685X-2016-38-5-9-14.