%0 Journal Article %A Xavier Guitart %T Fields of definition of building blocks with quaternionic multiplication %J Acta Arithmetica %D 2012 %P 1-14 %V 153 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa153-1-1/ %R 10.4064/aa153-1-1 %G en %F 10_4064_aa153_1_1