ESHKABILOV, Yu. Kh. Necessary and sufficient condition for solvability of a partial integral equation. Methods of Functional Analysis and Topology, [S. l.], v. 15, n. 1, p. 67–73, 2009. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/410. Acesso em: 16 dec. 2025.