TY - JOUR AU - V. M. Deundyak TI - Homotopic classification and calculation of the index of families of multidimensional bisingular integral operators JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1996 SP - 34 EP - 46 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1996_5_a4/ LA - ru ID - IVM_1996_5_a4 ER -