TY  - JOUR
AU  - L. I. Kovalenko
TI  - Existence of a generalized solution of the Tricomi problem.~I
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 511
EP  - 528
VL  - 12
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_3_a11/
LA  - ru
ID  - DE_1976_12_3_a11
ER  -