%0 Journal Article %A Petrich, Mario %T Normal cryptogroups with an associate subgroup %J Czechoslovak Mathematical Journal %D 2013 %P 289-305 %V 63 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10587-013-0019-z/ %R 10.1007/s10587-013-0019-z %G en %F 10_1007_s10587_013_0019_z