@article{JRAM_1977__290_151835,
     author = {Sheau-Dong Lang},
     title = {Note on the class-number of the maximal real subfield of a cyclomatic field.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {70--72},
     publisher = {mathdoc},
     volume = {290},
     year = {1977},
     zbl = {0346.12003},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1977__290_151835/}
}