@misc{KYB_1989__25_4_a7,
     title = {News},
     journal = {Kybernetika},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1989__25_4_a7/}
}