@article{10_21136_CPM_1966_108110,
     author = {Hejn\'y, Milan},
     title = {Kore\v{s}pondencia smerov dotykov\'eho a norm\'alov\'eho priestoru variety ${\frak V}_k$ in $E_n$},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {198--204},
     publisher = {mathdoc},
     volume = {091},
     number = {2},
     year = {1966},
     doi = {10.21136/CPM.1966.108110},
     mrnumber = {0196683},
     zbl = {0138.42501},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1966.108110/}
}