Nurmakhanov Н.Б., Usupov У.М. and Belasarov Б.Б. 2022. Algorithm for obtaining the equations of the T4-4 transformation of a special form and their properties. Рroblems of engineering and professional education. 63, 4 (Nov. 2022), 36. DOI:https://doi.org/10.32523/2220-685X-2021-63-4-36.