ALI, Amjad; UR REHMAN, Atta. Classification of Cylindrically Symmetric Marder Type Spacetimes According to Their Proper Homothetic Vector Fields. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 25, n. 3, p. 13–19, 2016. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/5247. Acesso em: 2 apr. 2026.