TY - JOUR AU - M. I. Graev TI - A Problem of Integral Geometry Related to a Triple of Grassmann Manifolds JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 2000 SP - 78 EP - 81 VL - 34 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_2000_34_4_a7/ LA - ru ID - FAA_2000_34_4_a7 ER -