@article{1102982972,
author = {Kallina, Carl},
title = {A Green's function approach to perturbations of periodic solutions.},
journal = {Pacific J. Math.},
volume = {31},
number = {3},
year = {1969},
pages = { 325-334},
language = {en},
url = {http://dml.mathdoc.fr/item/1102982972}
}
Kallina, Carl. A Green's function approach to perturbations of periodic solutions.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 325-334. http://gdmltest.u-ga.fr/item/1102982972/