@article{10_21136_CPM_1976_117910,
     author = {Kr\'al, Josef},
     title = {K jedn\'e matematick\'e \'uloze o vlasech},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {305--307},
     year = {1976},
     volume = {101},
     number = {3},
     doi = {10.21136/CPM.1976.117910},
     mrnumber = {0445467},
     zbl = {0327.26012},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1976.117910/}
}