@article{2004, author = {Segre, Beniamino}, title = {Alcune questioni algebrico-differenziali}, journal = {Portugaliae mathematica}, volume = {10}, year = {1951}, pages = {29-36}, zbl = {0043.36102}, mrnumber = {0044862}, language = {it}, url = {http://dml.mathdoc.fr/item/2004} }
Segre, Beniamino. Alcune questioni algebrico-differenziali. Portugaliae mathematica, Tome 10 (1951) pp. 29-36. http://gdmltest.u-ga.fr/item/2004/