@article{03764678, title = {Relativistic significance of curvature tensors.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {5}, year = {1982}, pages = {133-139}, doi = {10.1155/S0161171282000131}, zbl = {0486.53022}, language = {en}, url = {http://dml.mathdoc.fr/item/03764678} }
Pokhariyal, G.P. Relativistic significance of curvature tensors.. International Journal of Mathematics and Mathematical Sciences, Tome 5 (1982) pp. 133-139. doi : 10.1155/S0161171282000131. http://gdmltest.u-ga.fr/item/03764678/