TY - JOUR AU - Zh. Kaidasov AU - E. V. Shishkin TI - Isometric immersion in $E^3$ of extended strips on manifolds of type~$L$ JO - Matematičeskie zametki PY - 1987 SP - 842 EP - 853 VL - 42 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1987_42_6_a7/ LA - ru ID - MZM_1987_42_6_a7 ER -