@article{ASNSP_1967_3_21_3_395_0,
     author = {David, M.},
     title = {A generalization of a theorem of {J.} {Steinberg}},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {395--400},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 21},
     number = {3},
     year = {1967},
     mrnumber = {234219},
     zbl = {0174.43303},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1967_3_21_3_395_0/}
}