@article{MAN_1899__52_157943,
     author = {Niels Nielsen},
     title = {Sur le produit de deux fonctions cylindriques},
     journal = {Mathematische Annalen},
     pages = {228--242},
     publisher = {mathdoc},
     volume = {52},
     year = {1899},
     zbl = {30.0417.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1899__52_157943/}
}