@misc{KYB_1990_26_4_a7,
     title = {Zpr\'avy},
     journal = {Kybernetika},
     pages = {353--360},
     year = {1990},
     volume = {26},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1990_26_4_a7/}
}