@article{04140713, title = {Second order parallel tensor in real and complex space forms.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {12}, year = {1989}, pages = {787-790}, doi = {10.1155/S0161171289000967}, zbl = {0696.53012}, language = {en}, url = {http://dml.mathdoc.fr/item/04140713} }
Sharma, Ramesh. Second order parallel tensor in real and complex space forms.. International Journal of Mathematics and Mathematical Sciences, Tome 12 (1989) pp. 787-790. doi : 10.1155/S0161171289000967. http://gdmltest.u-ga.fr/item/04140713/