@article{10_4064_cm_69_1_147_153,
     author = {Franz Halter-Koch and Philip Leonard},
     title = {Negatively reduced ideals in orders of real quadratic fields: even discriminants},
     journal = {Colloquium Mathematicum},
     pages = {147--153},
     publisher = {mathdoc},
     volume = {69},
     number = {1},
     year = {1996},
     doi = {10.4064/cm-69-1-147-153},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-69-1-147-153/}
}