@article{05723599, title = {Lower bounds for the principal genus of definite binary quadratic forms.}, journal = {Integers}, volume = {10}, year = {2010}, pages = {257-264}, doi = {10.1515/INTEG.2010.021}, zbl = {1209.11044}, language = {en}, url = {http://dml.mathdoc.fr/item/05723599} }
Hopkins, Kimberly; Stopple, Jeffrey. Lower bounds for the principal genus of definite binary quadratic forms.. Integers, Tome 10 (2010) pp. 257-264. doi : 10.1515/INTEG.2010.021. http://gdmltest.u-ga.fr/item/05723599/