@article{KYB_1984__20_3_a3,
     author = {Jan\'ak, Jaroslav},
     title = {The calculus of an unnormalized relational model of data},
     journal = {Kybernetika},
     pages = {231--239},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1984},
     mrnumber = {763648},
     zbl = {0554.68009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1984__20_3_a3/}
}