Atanasova, Pavlina, Atanaska Georgieva, and Lozanka Trenkova. “EXISTENCE OF CONTINUOUS SOLUTIONS OF A PERTURBED LINEAR VOLTERRA INTEGRAL EQUATIONS”. Ann. Sofia Univ. Fac. Math. and Inf. 103 (December 12, 2016): 79–88. Accessed November 21, 2024. https://ftl5.uni-sofia.bg/index.php/fmi/article/view/56.