TY - JOUR AU - A. M. Vasil'ev TI - Linear differential systems and invariant realizations of differential-geometric structures JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1984 SP - 22 EP - 34 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1984_7_a2/ LA - ru ID - IVM_1984_7_a2 ER -