TY - JOUR AU - G. M. Mirsaburova TI - Problem with nonlocal conditions on parts of the boundary characteristics and on the degeneracy segment for Gellerstedt equation with singular coefficient JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2020 SP - 64 EP - 83 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2020_1_a5/ LA - ru ID - IVM_2020_1_a5 ER -