TY  - JOUR
AU  - N. P. Erugin
TI  - The analytic and the qualitative theory, and also the asymptotic behavior of the solutions of the system $dx/dz=2\surd P(x,y)/z$, $dy/dz=2$ $\surd P(x,y)/(1-z)$. I
JO  - Differencialʹnye uravneniâ
PY  - 1974
SP  - 963
EP  - 995
VL  - 10
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1974_10_6_a0/
LA  - ru
ID  - DE_1974_10_6_a0
ER  -