@article{10_21136_CPM_1969_117668,
     author = {N\'aden{\'\i}k, Zbyn\v{e}k},
     title = {Ungleichungen f\"ur zweidimensionale {Fl\"achen} im vierdimensionalen {Raum}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {213--216},
     year = {1969},
     volume = {94},
     number = {2},
     doi = {10.21136/CPM.1969.117668},
     mrnumber = {0256309},
     zbl = {0181.49103},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1969.117668/}
}