%0 Journal Article %A Changphas, Thawhat %A Denecke, Klaus %T Complexity of hypersubstitutions and lattices of varieties %J Discussiones Mathematicae. General Algebra and Applications %D 2003 %P 31-43 %V 23 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2003_23_1_a3/ %G en %F DMGAA_2003_23_1_a3