Conditions for the existence of a general integral of the form $x^2+y^2\exp[\sum^n_{i=1}\phi_i(x,y)]=C$ in a fractional-cubic differential equation. (Russian)
Conditions for the existence of a general integral of the form $x^2+y^2\exp[\sum^n_{i=1}\phi_i(x,y)]=C$ in a fractional-cubic differential equation. (Russian)