@article{10_21136_CPM_1956_117194,
     author = {Be\v{c}v\'a\v{r}, Ji\v{r}{\'\i} and Nekvinda, Miloslav},
     title = {Pozn\'amka o extr\'emech funkc{\'\i} dvou a v{\'\i}ce prom\v{e}nn\'ych},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {267--271},
     publisher = {mathdoc},
     volume = {081},
     number = {3},
     year = {1956},
     doi = {10.21136/CPM.1956.117194},
     mrnumber = {0085312},
     zbl = {0075.25702},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1956.117194/}
}