@article{05703602,
title = {On weakly symmetric and special weakly Ricci symmetric Lorentzian },
journal = {Acta Universitatis Apulensis. Mathematics - Informatics},
volume = {18},
year = {2009},
pages = {47-54},
zbl = {1212.53046},
language = {en},
url = {http://dml.mathdoc.fr/item/05703602}
}
Sreenivasa, G.T.; Venkatesha; Bagewadi, C.S.; Naganagoud, K. On weakly symmetric and special weakly Ricci symmetric Lorentzian . Acta Universitatis Apulensis. Mathematics - Informatics, Tome 18 (2009) pp. 47-54. http://gdmltest.u-ga.fr/item/05703602/