@article{GDZPPN002181088,
title = {On the class-number of the maximal real subfield of a cyclotomic field.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {218},
year = {1965},
pages = {217-220},
zbl = {0128.03501},
url = {http://dml.mathdoc.fr/item/GDZPPN002181088}
}
Hasse, H.; Chowla, S.; Ankeny, N.C. On the class-number of the maximal real subfield of a cyclotomic field.. Journal für die reine und angewandte Mathematik, Tome 218 (1965) pp. 217-220. http://gdmltest.u-ga.fr/item/GDZPPN002181088/