Atanasova, P., Georgieva, A., & Trenkova, L. (2016). EXISTENCE OF CONTINUOUS SOLUTIONS OF A PERTURBED LINEAR VOLTERRA INTEGRAL EQUATIONS. Ann. Sofia Univ. Fac. Math. And Inf., 103, 79–88. Retrieved from https://ftl5.uni-sofia.bg./index.php/fmi/article/view/56