TY - JOUR AU - K. K. Muminov AU - R. A. Gafforov TI - Systems of matrix differential equations for surfaces JO - Contemporary Mathematics. Fundamental Directions PY - 2022 SP - 70 EP - 79 VL - 68 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2022_68_1_a5/ LA - ru ID - CMFD_2022_68_1_a5 ER -