DOBRIȚOIU, Maria. “The Study of the Solution of a Fredholm-Volterra Integral Equation by Picard Operators”. Studia Universitatis Babeș-Bolyai Mathematica 64, no. 4 (December 30, 2019): 551–563. Accessed February 10, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2380.