TY  - JOUR
AU  - V. Kh. Froim
TI  - Linear systems of first-order partial differential equations with semiregular degeneration on a hyperplane
JO  - Differencialʹnye uravneniâ
PY  - 1981
SP  - 373
EP  - 382
VL  - 17
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1981_17_2_a19/
LA  - ru
ID  - DE_1981_17_2_a19
ER  -