@misc{KYB_1987_23_6_a7,
     title = {New {Books}},
     journal = {Kybernetika},
     pages = {515--526},
     year = {1987},
     volume = {23},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1987_23_6_a7/}
}