@article{RMF_2010_85_2_a0,
     author = {Calda, Emil and \v{S}im\v{s}a, Jarom{\'\i}r},
     title = {O jedn\'e vlastnosti stran a \'uhl\r{u} v troj\'uheln{\'\i}ku},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {1--5},
     year = {2010},
     volume = {85},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2010_85_2_a0/}
}