@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/}
}