Existence of Harmonic Functions with Finite Energy on Complete Riemannian Manifolds. Journal of Partial Differential Equations, [S. l.], v. 7, n. 3, p. 257–263, 1994. Disponível em: https://www.global-sci.com/index.php/jpde/article/view/3776. Acesso em: 5 dec. 2025.