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@article{JRAM_1977__292_151875, author = {Asmus L. Schmidt}, title = {Minimum of quadratic forms with respect to {Fuchsian} groups. {II.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {109--114}, publisher = {mathdoc}, volume = {292}, year = {1977}, zbl = {0347.10017}, url = {http://geodesic.mathdoc.fr/item/JRAM_1977__292_151875/} }
Asmus L. Schmidt. Minimum of quadratic forms with respect to Fuchsian groups. II.. Journal für die reine und angewandte Mathematik, Tome 292 (1977), pp. 109-114. http://geodesic.mathdoc.fr/item/JRAM_1977__292_151875/