SOLODKII, S. G. Complexity of fredholm equations of the second kind with kernels from anisotropic classes of differentiable functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 4, p. 525–532, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5315. Acesso em: 14 apr. 2025.