TY - JOUR AU - O. A. Chalykh TI - On a~construction of commutative rings of differential operators JO - Matematičeskie zametki PY - 1993 SP - 121 EP - 130 VL - 53 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1993_53_3_a12/ LA - ru ID - MZM_1993_53_3_a12 ER -