TY - JOUR AU - S. B. Penchansky TI - On functionally invariant solutions of a system of partial differential equations JO - Differencialʹnye uravneniâ PY - 1985 SP - 1449 EP - 1450 VL - 21 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1985_21_8_a23/ LA - ru ID - DE_1985_21_8_a23 ER -