@article{05052091, title = {Proper homothetic vector fields in Bianchi type-I space-time.}, journal = {APPS. Applied Sciences}, volume = {8}, year = {2006}, pages = {153-157}, zbl = {1098.53059}, language = {en}, url = {http://dml.mathdoc.fr/item/05052091} }
Shabbir, Ghulam; Amur, Khuda Bux. Proper homothetic vector fields in Bianchi type-I space-time.. APPS. Applied Sciences, Tome 8 (2006) pp. 153-157. http://gdmltest.u-ga.fr/item/05052091/