ZORII, N. V. Theory of Potential with Respect to Consistent Kernels; Theorem on Completeness and Sequences of Potentials. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 11, p. 1513–1526, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3862. Acesso em: 7 apr. 2025.