TY - JOUR AU - A. V. Lasunsky TI - On the reduction of a second-order linear system to a triangular system with identical diagonal coefficients JO - Differencialʹnye uravneniâ PY - 1994 SP - 987 EP - 991 VL - 30 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1994_30_6_a7/ LA - ru ID - DE_1994_30_6_a7 ER -