@article{PMFA_1991_36_3_a4,
     author = {Wells, David},
     title = {Jsou to ty nejkr\'asn\v{e}j\v{s}{\'\i} ?},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {171--179},
     year = {1991},
     volume = {36},
     number = {3},
     mrnumber = {1146852},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1991_36_3_a4/}
}