@article{GDZPPN002327554, title = {All Congruent Numbers Less than 2000.}, journal = {Mathematische Annalen}, volume = {270}, year = {1985}, pages = {337-340}, zbl = {0561.10007}, url = {http://dml.mathdoc.fr/item/GDZPPN002327554} }
Kramarz, Gerhard. All Congruent Numbers Less than 2000.. Mathematische Annalen, Tome 270 (1985) pp. 337-340. http://gdmltest.u-ga.fr/item/GDZPPN002327554/