%0 Journal Article %A Norman Richert %T A generalization of a theorem of Euler for regular chains of complex quadratic irrationalities %J Acta Arithmetica %D 1990 %P 1-18 %V 56 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-56-1-1-18/ %R 10.4064/aa-56-1-1-18 %G en %F 10_4064_aa_56_1_1_18