%0 Journal Article %A Phuapong, Sarawut %A Leeratanavalee, Sorasak %T Pre-strongly solid varieties of commutative semigroups %J Discussiones Mathematicae. General Algebra and Applications %D 2011 %P 27-45 %V 31 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2011_31_1_a1/ %G en %F DMGAA_2011_31_1_a1