Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1983__42_132858, author = {A. Bellen}, title = {Monotone {Methods} for {Periodic} solutions of {Second} {Order} {Scalar} {Functional} {Differential} {Equations.}}, journal = {Numerische Mathematik}, pages = {15--30}, publisher = {mathdoc}, volume = {42}, year = {1983}, zbl = {0536.65065}, url = {http://geodesic.mathdoc.fr/item/NUMA_1983__42_132858/} }
A. Bellen. Monotone Methods for Periodic solutions of Second Order Scalar Functional Differential Equations.. Numerische Mathematik, Tome 42 (1983), pp. 15-30. http://geodesic.mathdoc.fr/item/NUMA_1983__42_132858/