%0 Journal Article %A Kwang-Seob Kim %T An example of a $\mathop {\rm PSL}\nolimits _2(\mathbb {F}_7)$-maximal unramified extension of a quartic number field %J Acta Arithmetica %D 2017 %P 147-162 %V 179 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa8506-2-2017/ %R 10.4064/aa8506-2-2017 %G en %F 10_4064_aa8506_2_2017