STANILOV, G.; VIDEV, V. A characterization of the complex space forms. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 85, p. 39–42, 1993. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/451. Acesso em: 22 nov. 2024.