@article{01852867, title = {The quantum spheres and their embedding into quantum Minkowski space-time.}, journal = {Journal of Applied Mathematics}, volume = {2}, year = {2002}, pages = {315-335}, doi = {10.1155/S1110757X0211103X}, zbl = {1014.83025}, language = {en}, url = {http://dml.mathdoc.fr/item/01852867} }
Lagraa, M. The quantum spheres and their embedding into quantum Minkowski space-time.. Journal of Applied Mathematics, Tome 2 (2002) pp. 315-335. doi : 10.1155/S1110757X0211103X. http://gdmltest.u-ga.fr/item/01852867/