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@article{MS2_1956__4_165628, author = {W.A. AL-SALAM}, title = {On the product of two {Legendre} polynomials}, journal = {Mathematica Scandinavica}, pages = {239--242}, publisher = {mathdoc}, volume = {4}, year = {1956}, zbl = {0077.07203}, url = {http://geodesic.mathdoc.fr/item/MS2_1956__4_165628/} }
W.A. AL-SALAM. On the product of two Legendre polynomials. Mathematica Scandinavica, Tome 4 (1956), pp. 239-242. http://geodesic.mathdoc.fr/item/MS2_1956__4_165628/