@article{PORMA_1951__10_1_114499,
     author = {Segre, Beniamino},
     title = {Alcune questioni algebrico-differenziali},
     journal = {Portugaliae mathematica},
     pages = {29--36},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {1951},
     mrnumber = {0044862},
     zbl = {0043.36102},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1951__10_1_114499/}
}