@article{RMF_2007__82_4_a2,
     author = {Volf, Ivo},
     title = {Bez graf\r{u} by bylo \v{r}e\v{s}en{\'\i} \'uloh asi obt{\'\i}\v{z}n\v{e}j\v{s}{\'\i}. 1. \v{c}\'ast},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {15--20},
     publisher = {mathdoc},
     volume = {82},
     number = {4},
     year = {2007},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/RMF_2007__82_4_a2/}
}