TOPALOV, Peter. Geodesically compatible metrics. Existence of commutative conservation laws. CUBO, A Mathematical Journal, [S. l.], v. 4, n. 2, p. 362–390, 2002. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1796. Acesso em: 13 oct. 2025.