@article{PMFA_1967_12_6_a14,
     author = {Hru\v{s}a, Karel},
     title = {Dva metodikov\'e},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {387--388},
     year = {1967},
     volume = {12},
     number = {6},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1967_12_6_a14/}
}