@article{04033863, title = {Quadratic subfields of quartic extensions of local fields.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {11}, year = {1988}, pages = {1-4}, doi = {10.1155/S0161171288000018}, zbl = {0635.12008}, language = {en}, url = {http://dml.mathdoc.fr/item/04033863} }
Repka, Joe. Quadratic subfields of quartic extensions of local fields.. International Journal of Mathematics and Mathematical Sciences, Tome 11 (1988) pp. 1-4. doi : 10.1155/S0161171288000018. http://gdmltest.u-ga.fr/item/04033863/