TY - JOUR AU - V. V. Ryzhikov AU - V. I. Dmitriev TI - Generalization of the Chevalley and von Neumann problems JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1987 SP - 56 EP - 57 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1987_6_a10/ LA - ru ID - VMUMM_1987_6_a10 ER -