TY  - JOUR
AU  - M. V. Kozhero
TI  - The behavior of the integral surfaces of a homogeneous Pfaffian differential equation in the vicinity of singular rays
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 874
EP  - 879
VL  - 5
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_5_a8/
LA  - ru
ID  - DE_1969_5_5_a8
ER  -