TY - JOUR AU - Yu. A. Apresyan TI - A~class of three-webs on a~four-dimensional manifold and corresponding third-order differential equations JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1985 SP - 3 EP - 8 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1985_1_a0/ LA - ru ID - IVM_1985_1_a0 ER -