@article{PPN235181684_0255+dmdlog21, title = {Iterated Ring Class Fields and the Icosahedron.}, journal = {Mathematische Annalen}, volume = {255}, year = {1981}, pages = {107-122}, zbl = {0437.12010}, url = {http://dml.mathdoc.fr/item/PPN235181684_0255+dmdlog21} }
Cohn, Harvey. Iterated Ring Class Fields and the Icosahedron.. Mathematische Annalen, Tome 255 (1981) pp. 107-122. http://gdmltest.u-ga.fr/item/PPN235181684_0255+dmdlog21/