[1]
Nurmakhanov Н.Б. and Karazhanov A.A. К.А. 2022. Geometric design of the surface of an underground working using (2-2)-digit transformation Г2. Рroblems of engineering and professional education. 2, 2 (Dec. 2022), 8. DOI:https://doi.org/10.32523/2220-685X-2010-2-2-8.