TY - JOUR AU - S. S. Belyavsky TI - Construction of adjoint differential systems in the analytic case JO - Differencialʹnye uravneniâ PY - 1970 SP - 1716 EP - 1717 VL - 6 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1970_6_9_a19/ LA - ru ID - DE_1970_6_9_a19 ER -