Baidabekov А., Muradov Ш., Adilov П. and Tashimov N.E. Т. Н. 2023. Curves of the second order - as sections of surfaces second order in predetermined parameters. Рroblems of engineering and professional education. 38, 5 (Mar. 2023), 9–14. DOI:https://doi.org/10.32523/2220-685X-2016-38-5-9-14.