TY - JOUR AU - I. Kh. Sabitov TI - Bendable Surfaces without Visible Deformations of Their Shape JO - Matematičeskie zametki PY - 2021 SP - 119 EP - 130 VL - 110 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2021_110_1_a10/ LA - ru ID - MZM_2021_110_1_a10 ER -