@misc{KYB_1968_4_3_a7,
     title = {Zpr\'avy},
     journal = {Kybernetika},
     pages = {288--294},
     year = {1968},
     volume = {4},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/KYB_1968_4_3_a7/}
}