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@article{10_4064_aa_33_3_209_229, author = {Henryk Iwaniec}, title = {On indefinite quadratic forms in four variables}, journal = {Acta Arithmetica}, pages = {209--229}, publisher = {mathdoc}, volume = {33}, number = {3}, year = {1977}, doi = {10.4064/aa-33-3-209-229}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-33-3-209-229/} }
Henryk Iwaniec. On indefinite quadratic forms in four variables. Acta Arithmetica, Tome 33 (1977) no. 3, pp. 209-229. doi : 10.4064/aa-33-3-209-229. http://geodesic.mathdoc.fr/articles/10.4064/aa-33-3-209-229/
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