@article{BUMI_1958_3_13_4_a0,
     author = {Dr\u{a}gil\u{a}, Pavel},
     title = {Sur une classe de surfaces.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {465--469},
     publisher = {mathdoc},
     volume = {Ser. 3, 13},
     number = {4},
     year = {1958},
     zbl = {0092.39002},
     mrnumber = {103485},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1958_3_13_4_a0/}
}