@article{RMF_2018__93_1_a5,
     author = {Calda, Emil},
     title = {T\v{r}i snadn\'e (?) \'ulohy},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {39--40},
     publisher = {mathdoc},
     volume = {93},
     number = {1},
     year = {2018},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/RMF_2018__93_1_a5/}
}