BACK, A.; CARMO, M. P. D.; HSIANG, W.-Y. On some fundamental equations of equivariant Riemannian geometry. Tamkang Journal of Mathematics, [S. l.], v. 40, n. 4, p. 343–376, 2009. DOI: 10.5556/j.tkjm.40.2009.601. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/601. Acesso em: 16 apr. 2024.