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@article{EXMA_2004__13_4_53858, author = {Aicardi, Francesca}, title = {On the number of perfect binary quadratic forms.}, journal = {Experimental mathematics}, pages = {451--457}, publisher = {mathdoc}, volume = {13}, number = {4}, year = {2004}, zbl = {1133.11310}, language = {en}, url = {http://geodesic.mathdoc.fr/item/EXMA_2004__13_4_53858/} }
Aicardi, Francesca. On the number of perfect binary quadratic forms.. Experimental mathematics, Tome 13 (2004) no. 4, pp. 451-457. http://geodesic.mathdoc.fr/item/EXMA_2004__13_4_53858/