%0 Book Section
%1 Wille85a
%A Wille, Rudolf
%B Contributions to general algebra
%C Wien
%D 1985
%E Eigenthaler, G.
%E Kaiser, H. K.
%E Müller, W. B.
%E Nöbauer, W.
%I Hölder--Pichler--Tempsky
%K fba formal begriffsanalyse concept forschungsgruppe ag1 tu formale analysis lattices fca darmstadt
%P 397-415
%T Complete tolerance relations of concept
      lattices
%V 3