@article{PMFA_1977__22_5_a6,
     author = {Kopka, Jan},
     title = {Strategie v heuristice},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {286--292},
     publisher = {mathdoc},
     volume = {22},
     number = {5},
     year = {1977},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1977__22_5_a6/}
}