@article{MASLO_1956_6_4_a0,
     author = {Havel, V\'aclav},
     title = {O parabolick\'ych a projektivn{\'\i}ch kl{\'\i}nov\'ych ploch\'ach},
     journal = {Mathematica slovaca},
     pages = {197--204},
     year = {1956},
     volume = {6},
     number = {4},
     mrnumber = {0089431},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1956_6_4_a0/}
}