TY - JOUR AU - V. A. Ternovskiy TI - Closedness of basis surfaces invariant with respect to the group $H_3$ JO - Taurida Journal of Computer Science Theory and Mathematics PY - 2022 SP - 96 EP - 102 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TVIM_2022_2_a6/ LA - ru ID - TVIM_2022_2_a6 ER -