TY - JOUR AU - V. A. Artamonov TI - Projectively free nilpotent groups JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1983 SP - 41 EP - 42 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1983_5_a9/ LA - ru ID - VMUMM_1983_5_a9 ER -