%0 Journal Article %A Denecke, Klaus %A Lekkoksung, Somsak %T Hyperidentities in many-sorted algebras %J Discussiones Mathematicae. General Algebra and Applications %D 2009 %P 47-74 %V 29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2009_29_1_a3/ %G en %F DMGAA_2009_29_1_a3