@article{MAN_1937__113_159867,
     author = {G. Doetsch},
     title = {Beitrag zu {Watsons} },
     journal = {Mathematische Annalen},
     pages = {CCXXVI--CCXLI},
     year = {1937},
     volume = {113},
     zbl = {0015.02204},
     url = {http://geodesic.mathdoc.fr/item/MAN_1937__113_159867/}
}