@article{RMF_2010_85_4_a1,
     author = {Balkov\'a, \v{L}ubom{\'\i}ra and Bekrov\'a, Martina and Luke\v{s}, Jakub},
     title = {Jeden za osmn\'act a druh\'y bez dvou za dvacet aneb z\'aporn\'e cifry v z\'apisu \v{c}{\'\i}sel},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {3--11},
     year = {2010},
     volume = {85},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2010_85_4_a1/}
}