@article{ASNSP_1956_3_10_3-4_135_0,
     author = {Payne, L. E.},
     title = {Multivalued functions in generalized axially symmetric potential theory},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {135--145},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 10},
     number = {3-4},
     year = {1956},
     zbl = {0079.31704},
     mrnumber = {1556833},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1956_3_10_3-4_135_0/}
}