@article{00823357,
title = {Periodic boundary value problem for second order integro-ordinary differential equations with general kernel and Carath\'eodory nonlinearities.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {18},
year = {1995},
pages = {757-764},
doi = {10.1155/S0161171295000974},
zbl = {0837.45006},
language = {en},
url = {http://dml.mathdoc.fr/item/00823357}
}
Nieto, Juan J. Periodic boundary value problem for second order integro-ordinary differential equations with general kernel and Carathéodory nonlinearities.. International Journal of Mathematics and Mathematical Sciences, Tome 18 (1995) pp. 757-764. doi : 10.1155/S0161171295000974. http://gdmltest.u-ga.fr/item/00823357/