@article{JRAM_1976__0286_0287_151792,
     author = {Asmus L. Schmidt},
     title = {Minimum of quadratic forms with respect to {Fuchsian} groups. {I.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {341--368},
     year = {1976},
     volume = {0286_0287},
     zbl = {0332.10015},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1976__0286_0287_151792/}
}