@misc{PMFA_1974_19_1_a2,
     title = {O jeden\'act\'em a dvan\'act\'em {Hilbertov\v{e}} probl\'emu},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {21--22},
     year = {1974},
     volume = {19},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1974_19_1_a2/}
}