V. V. Korolev, “On boundedness of solutions of a linear system of differential equations with variable coefficients”, Differ. Uravn., 2:5 (1966), 609–613
1965
2.
V. V. Korolev, “On the existence and uniqueness of a limiting cycle for many-dimensional autonomous systems”, Differ. Uravn., 1:6 (1965), 736–741
Contact us: