Oscillation theory of differential equations with deviating arguments /

Autor Ladde, G. S., 1940-, Lakshmikantham, V. 1926-, Zhang, B. G., 1934-
Vydáno 1987

Oscillation theory for functional differential equations /

Autor Erbe, L. H., 1941-, Kong, Qingkai, 1946-, Zhang, B. G., 1934-
Vydáno 1995