AQUINO, C. P.; BALTAZAR, H. I.; DE LIMA, H. F. New characterizations of spacelike hyperplanes in the steady state space. MATHEMATICA SCANDINAVICA, [S. l.], v. 126, n. 1, p. 61–72, 2020. DOI: 10.7146/math.scand.a-117703. Disponível em: https://www.mscand.dk/article/view/117703. Acesso em: 19 apr. 2024.