TY - JOUR AU - E. G. Sklyarenko TI - Poincaré duality and relations between the functors Ext and Tor JO - Matematičeskie zametki PY - 1980 SP - 769 EP - 776 VL - 28 IS - 5 UR - http://geodesic.mathdoc.fr/item/MZM_1980_28_5_a11/ LA - ru ID - MZM_1980_28_5_a11 ER -