Qualitative theory of differential equations /
Nemyt︠s︡kiĭ, V. V.(Viktor Vladimirovich),1900-
Stepanov, V. V.(Vi︠a︡cheslav Viktorovich),1889-1950.
New York : Dover Publications,
1989.
Translation of: Kachestvennai︠a︡ teorii︠a︡ different︠s︡ialʹnykh uravneniĭ.
Reprint. Originally published: Princeton, N.J. : Princeton University Press, 1960.
Includes bibliographies.
Differential equations.
Dynamics.