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@article{COMIM_1998__6_1_a15, author = {Korec, Ivan}, title = {Definability of arithmetical operations from binary quadratic forms}, journal = {Communications in Mathematics}, pages = {135--144}, publisher = {mathdoc}, volume = {06}, number = {1}, year = {1998}, mrnumber = {1822523}, zbl = {1024.03011}, language = {en}, url = {http://geodesic.mathdoc.fr/item/COMIM_1998__6_1_a15/} }
Korec, Ivan. Definability of arithmetical operations from binary quadratic forms. Communications in Mathematics, Tome 06 (1998) no. 1, pp. 135-144. http://geodesic.mathdoc.fr/item/COMIM_1998__6_1_a15/