@article{MZ_1994__215_1_174622,
     author = {Donald G. James},
     title = {Representations by unimodular quadratic {Z-lattices.}},
     journal = {Mathematische Zeitschrift},
     pages = {465--476},
     publisher = {mathdoc},
     volume = {215},
     number = {1},
     year = {1994},
     zbl = {0790.11028},
     url = {http://geodesic.mathdoc.fr/item/MZ_1994__215_1_174622/}
}