@article{DeneckeKoppitzNiwczyk2002,
  author    = {Denecke, Klaus-Dieter and Koppitz, J{\"o}rg and Niwczyk, St.},
  title     = {Equational theories generated by generalized hypersubstitutions of type (n)},
  year      = {2002},
  language  = {en}
}