TY - JOUR AU - M. I. Graev TI - Relatively Closed Operators Associated to a Pair of Grassmannians JO - Matematičeskie zametki PY - 2002 SP - 61 EP - 74 VL - 71 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2002_71_1_a5/ LA - ru ID - MZM_2002_71_1_a5 ER -