@book{OPUS4-19362,
  title     = {General algebra and applications : proceedings of the 59th Workshop on General Algebra ; 15th Conference for Young Algebraists, Potsdam 2000},
  editor    = {Klaus-Dieter Denecke and Hans-J{\"u}rgen Vogel},
  isbn      = {3-8265-7983-6},
  year      = {2000},
}