%0 Journal Article %T Method for solving the periodic problem for integro-differential equations %A Snezhana G. Hristova %A Drumi D. Bainov %J Le Matematiche %D 1989 %I University of Catania %X In the paper a monotone-iterative method for approximate finding a couple of minimal and maximal quasisolutions of the periodic problem for a system of integro-differential equations of Volterra type is justified. %U http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/701