@article{01821314, title = {Strict positive definiteness on spheres via disk polynomials.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {715-724}, doi = {10.1155/S0161171202108076}, zbl = {1039.42007}, language = {en}, url = {http://dml.mathdoc.fr/item/01821314} }
Menegatto, V. A.; Peron, A. P. Strict positive definiteness on spheres via disk polynomials.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 715-724. doi : 10.1155/S0161171202108076. http://gdmltest.u-ga.fr/item/01821314/