@article{RMF_2013__88_1_a1,
     author = {Dlab, Vlastimil},
     title = {Srdce troj\'uheln{\'\i}ku},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {4--9},
     publisher = {mathdoc},
     volume = {88},
     number = {1},
     year = {2013},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/RMF_2013__88_1_a1/}
}