@misc{KYB_1977_13_3_a7,
     title = {Zpr\'avy},
     journal = {Kybernetika},
     pages = {222--223},
     year = {1977},
     volume = {13},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/KYB_1977_13_3_a7/}
}