@misc{KYB_1994__30_2_a9,
     title = {Book reviews},
     journal = {Kybernetika},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1994__30_2_a9/}
}