@article{RMF_2021__96_1_a3,
     author = {Dlab, Vlastimil},
     title = {\v{R}ada troj\'uheln{\'\i}k\r{u}},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {18--21},
     publisher = {mathdoc},
     volume = {96},
     number = {1},
     year = {2021},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/RMF_2021__96_1_a3/}
}