@article{AM2_1977__16_136676,
     author = {D.D. Bainov and G.H. Sarafova},
     title = {Application of partial averaging for a class of integro-differential equations of {Fredholm} type.},
     journal = {Aequationes mathematicae},
     pages = {65--70},
     publisher = {mathdoc},
     volume = {16},
     year = {1977},
     zbl = {0382.45008},
     url = {http://geodesic.mathdoc.fr/item/AM2_1977__16_136676/}
}