@article{01925188,
title = {Periodic solutions of second order integro-differential equations.},
journal = {Applied Mathematics E-Notes [electronic only]},
volume = {2},
year = {2002},
pages = {141-146},
zbl = {1031.45006},
language = {en},
url = {http://dml.mathdoc.fr/item/01925188}
}
Tsai, Long-Yi. Periodic solutions of second order integro-differential equations.. Applied Mathematics E-Notes [electronic only], Tome 2 (2002) pp. 141-146. http://gdmltest.u-ga.fr/item/01925188/