@article{JRAM_1972__253_151200,
     author = {H. Popp},
     title = {On a conjecture of {H.} {Rauch} on theta constants and {Riemann} surfaces with many automorphisms.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {66--77},
     publisher = {mathdoc},
     volume = {253},
     year = {1972},
     zbl = {0235.14011},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1972__253_151200/}
}