@article{04209043, title = {Some Friedmann cosmological solutions in the scale covariant theory of gravitation.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {14}, year = {1991}, pages = {305-308}, doi = {10.1155/S0161171291000352}, zbl = {0731.53077}, language = {en}, url = {http://dml.mathdoc.fr/item/04209043} }
Beesham, Aroonkumar. Some Friedmann cosmological solutions in the scale covariant theory of gravitation.. International Journal of Mathematics and Mathematical Sciences, Tome 14 (1991) pp. 305-308. doi : 10.1155/S0161171291000352. http://gdmltest.u-ga.fr/item/04209043/