@phdthesis{ArwornDenecke1999,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter},
  title     = {Sets of hypersubstitutions and set-solid varieties},
  year      = {1999},
  language  = {en}
}
@article{ArwornDenecke1999,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter},
  title     = {Left-edges solid varieties of differential groupoids},
  year      = {1999},
  language  = {en}
}
@article{ArwornDenecke1997,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter},
  title     = {Groupoids of hypersubstitutions and G-solid varieties},
  year      = {1997},
  language  = {en}
}
@article{ArwornDenecke1997,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter},
  title     = {A new methods to study subvariety lattices of semigroup varieties},
  year      = {1997},
  language  = {en}
}
@article{ArwornDenecke2001,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter},
  title     = {Tree Transformations defined by Hypersubstitutions},
  issn      = {1509 - 9415},
  year      = {2001},
  language  = {en}
}
@article{ArwornDenecke2002,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter},
  title     = {Intervals and complete congruences defined by M-solid varieties},
  year      = {2002},
  language  = {en}
}
@article{ArwornDeneckeKoppitz2001,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter and Koppitz, J{\"o}rg},
  title     = {Strongly luid and weakly unsolid varieties},
  issn      = {1346-0862},
  year      = {2001},
  language  = {en}
}
@book{ArwornDeneckePoeschel1998,
  author    = {Arworn, Srichan and Denecke, Klaus-Dieter and P{\"o}schel, Reinhard},
  title     = {Closure operators on complete lattices},
  series = {Preprint MATH-ALG / Technische Universit{\"a}t Dresden},
  volume    = {1998, 05},
  journal   = {Preprint MATH-ALG / Technische Universit{\"a}t Dresden},
  publisher = {Techn. Univ.},
  address   = {Dresden},
  year      = {1998},
  language  = {en}
}
@article{ChajadaDeneckeHalas1999,
  author    = {Chajada, I. and Denecke, Klaus-Dieter and Halas, R.},
  title     = {Algebras induced by hypersubstitutions},
  year      = {1999},
  language  = {en}
}
@article{ChangphasDenecke2005,
  author    = {Changphas, Thawhat and Denecke, Klaus-Dieter},
  title     = {Green's relation R on the monoid of clone endomorphisms},
  issn      = {1005-3867},
  year      = {2005},
  abstract  = {A hypersubstitution is a map which takes n-ary operation symbols to n-ary terms. Any such map can be uniquely extended to a map defined on the set W-tau(X) of all terms of type tau, and any two such extensions can be composed in a natural way. Thus, the set Hyp(tau) of all hypersubstitutions of type tau forms a monoid. In this paper, we characterize Green's relation R on the monoid Hyp(tau) for the type tau = (n, n). In this case, the monoid of all hypersubstitutions is isomorphic with the monoid of all Clone endomorphisms. The results can be applied to mutually derived varieties},
  language  = {en}
}