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@article{MZ_1951__55_169249, author = {Martin Eichler}, title = {Die {\"Ahnlichkeitsklassen} indefiniter {Gitter.}}, journal = {Mathematische Zeitschrift}, pages = {216--252}, publisher = {mathdoc}, volume = {55}, year = {1951}, url = {http://geodesic.mathdoc.fr/item/MZ_1951__55_169249/} }
Martin Eichler. Die Ähnlichkeitsklassen indefiniter Gitter.. Mathematische Zeitschrift, Tome 55 (1951), pp. 216-252. http://geodesic.mathdoc.fr/item/MZ_1951__55_169249/