@article{PMFA_1980_25_6_a3,
     author = {Pontrjagin, L. S.},
     title = {Optimalizace a diferenci\'aln{\'\i} hry},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {318--324},
     year = {1980},
     volume = {25},
     number = {6},
     mrnumber = {0624785},
     zbl = {0453.90114},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1980_25_6_a3/}
}