@article{10_4064_aa110_1_2,
     author = {Franz Lemmermeyer},
     title = {Some families of non-congruent numbers},
     journal = {Acta Arithmetica},
     pages = {15--36},
     publisher = {mathdoc},
     volume = {110},
     number = {1},
     year = {2003},
     doi = {10.4064/aa110-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa110-1-2/}
}