@article{CMUC_1989__30_2_a19,
     author = {Rotondaro, Giovanni},
     title = {On the $Hp$-theorem for hypersurfaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {385--387},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1989},
     mrnumber = {1014138},
     zbl = {0678.53004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_2_a19/}
}