@article{bwmeta1.element.bwnjournal-article-aav35i4p385bwm,
author = {Iimura, Kiyoaki},
title = {Dihedral extensions of Q of degree 21 which contain non-Galois extensions with class number not divisible by l},
journal = {Acta Arithmetica},
volume = {35},
year = {1979},
pages = {385-394},
zbl = {0421.12008},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav35i4p385bwm}
}
Iimura, Kiyoaki. Dihedral extensions of Q of degree 21 which contain non-Galois extensions with class number not divisible by l. Acta Arithmetica, Tome 35 (1979) pp. 385-394. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav35i4p385bwm/