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@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/} }
Janák, Jaroslav. The calculus of an unnormalized relational model of data. Kybernetika, Tome 20 (1984) no. 3, pp. 231-239. http://geodesic.mathdoc.fr/item/KYB_1984__20_3_a3/