CARLSON, R. Robin boundary conditions for the Laplacian on metric graph completions. Methods of Functional Analysis and Topology, [S. l.], v. 28, n. 1, p. 12–24, 2022. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/815. Acesso em: 15 dec. 2025.