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@article{PORMA_1981__40_4_115467, author = {Habibullah, G.M.}, title = {A note on an integral operator involving {Legendre} functions}, journal = {Portugaliae mathematica}, pages = {399--403}, publisher = {mathdoc}, volume = {40}, number = {4}, year = {1981}, mrnumber = {0836101}, zbl = {0584.44005}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1981__40_4_115467/} }
Habibullah, G.M. A note on an integral operator involving Legendre functions. Portugaliae mathematica, Tome 40 (1981) no. 4, pp. 399-403. http://geodesic.mathdoc.fr/item/PORMA_1981__40_4_115467/