@misc{KYB_1991_27_6_a6,
     title = {New {Books}},
     journal = {Kybernetika},
     pages = {551--563},
     year = {1991},
     volume = {27},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1991_27_6_a6/}
}