TY - JOUR AU - K. Kh. Boimatov TI - Multidimensional systems of differential equations of composite type with nonsmooth coefficients JO - Doklady Akademii Nauk PY - 1990 SP - 525 EP - 528 VL - 313 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1990_313_3_a1/ LA - ru ID - DAN_1990_313_3_a1 ER -