@article{PMFA_1987_32_6_a1,
     author = {Lax, Peter D.},
     title = {Matematika a jej{\'\i} aplikace},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {309--314},
     year = {1987},
     volume = {32},
     number = {6},
     mrnumber = {0926883},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1987_32_6_a1/}
}