@article{10_21136_CMJ_1963_100572,
     author = {Havel, V\'aclav},
     title = {\"Uber die begleitenden {Normaldreibeine} der {Fl\"ache} ${\cal A}\sp{2}\sb{0,3}$, {I}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {327--334},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1963},
     doi = {10.21136/CMJ.1963.100572},
     mrnumber = {0161236},
     zbl = {0133.15301},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1963.100572/}
}