@article{RMF_2017_92_1_a0,
     author = {Tomsa, Jan},
     title = {Nehrajte si se sirkami {I}},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {1--9},
     year = {2017},
     volume = {92},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2017_92_1_a0/}
}