@phdthesis{Lengnink96,
  author = {Lengnink, Katja},
  interhash = {7740b38d0940f302d4a2b05159090fc6},
  intrahash = {890a4206d2c1bdd38539cb2b888d9ed5},
  note = {Verlag Shaker, Aachen, 1996},
  publischer = {Amer.~Math.~Soc.},
  school = {TH Darmstadt},
  title = {Formalisierungen von Ähnlichkeit aus Sicht der Formalen Begriffsanalyse},
  year = 1996
}