Almost Periodic Solutions of Certain Differential Equations with Piecewise Constant Delays and Almost Periodic Time Dependence
Tài liệu tham khảo
G. Seifert, Periodic solutions of certain logistic equations with discontinuous delays, Comm. Appl. Anal, to appear.
G. Seifert, Periodic solutions of differential equations with piecewise constant delays, submitted for publication.
Cooke, 1974, 1475
Fink, 1974, 377