@misc{KYB_1992__28_5_a6,
     title = {Book reviews},
     journal = {Kybernetika},
     publisher = {mathdoc},
     volume = {28},
     number = {5},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1992__28_5_a6/}
}