Pashaie, F. 2021. Weakly convex hypersurfaces of pseudo-Euclidean spaces satisfying the condition LkHk+1 = λHk+1. Proyecciones (Antofagasta, On line). 40, 3 (May 2021), 711-719. DOI:https://doi.org/10.22199/issn.0717-6279-3584.