TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Leeratanavalee, Sorasak T1 - Tree transformations defined by generalized hypersubstitutions Y1 - 2003 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Leeratanavalee, Sorasak T1 - The Semantical Kernel of a Generalized Hypersubstitution Y1 - 2003 ER - TY - THES A1 - Leeratanavalee, Sorasak T1 - Weak Hypersubstitutions Y1 - 2002 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Leeratanavalee, Sorasak T1 - M-solid polynomial varieties of semigroups Y1 - 2001 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Leeratanavalee, Sorasak T1 - Generalized hypersubstitutions and strongly solid varieties Y1 - 2000 SN - 3-8265- 7983-6 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Leeratanavalee, Sorasak T1 - Solid polynomial varieties of semigroups which are definable by identities Y1 - 2000 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Leeratanavalee, Sorasak T1 - Weak hypersubstitutions and weakly derived algebras Y1 - 1999 ER -