@article{GDZPPN001177923,
title = {Monotone Methods for Periodic solutions of Second Order Scalar Functional Differential Equations.},
journal = {Numerische Mathematik},
volume = {42},
year = {1983},
pages = {15-30},
zbl = {0536.65065},
url = {http://dml.mathdoc.fr/item/GDZPPN001177923}
}
Bellen, A. Monotone Methods for Periodic solutions of Second Order Scalar Functional Differential Equations.. Numerische Mathematik, Tome 42 (1983) pp. 15-30. http://gdmltest.u-ga.fr/item/GDZPPN001177923/