@article{BUMI_1954_3_9_1_a2,
     author = {Zappa, Guido},
     title = {Sui piani grafici finiti $h$-$l$-transitivi.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {16--24},
     publisher = {mathdoc},
     volume = {Ser. 3, 9},
     number = {1},
     year = {1954},
     zbl = {0055.38010},
     mrnumber = {61390},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1954_3_9_1_a2/}
}