Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2008_38_1a_3, author = {B. Xh. Fejzullahu}, title = {Divergent {Legendre-Sobolev} polynomial series}, journal = {Novi Sad Journal of Mathematics}, pages = {35-41}, publisher = {mathdoc}, volume = {38}, number = {1}, year = {2008}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2008_38_1a_3/} }
B. Xh. Fejzullahu. Divergent Legendre-Sobolev polynomial series. Novi Sad Journal of Mathematics, Tome 38 (2008) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_2008_38_1a_3/