ZHANG, N. On the mean curvature of spacelike hypersurfaces in spatially parabolic GRW spacetimes. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 25, p. 40–44, 2026. DOI: 10.24297/jam.v25i.9897. Disponível em: https://rajpub.com/index.php/jam/article/view/9897. Acesso em: 25 may. 2026.