@misc{KYB_1972_8_3_a9,
     title = {Zpr\'avy},
     journal = {Kybernetika},
     pages = {273--275},
     year = {1972},
     volume = {8},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/KYB_1972_8_3_a9/}
}