%0 Conference Paper
%1 StahlWille86
%A Stahl, Jürgen
%A Wille, Rudolf
%B Classification as a tool of research
%C Amsterdam
%D 1986
%E Gaul, W.
%E Schader, M.
%I North--Holland
%K fba formal begriffsanalyse concept forschungsgruppe ag1 tu formale analysis lattices fca darmstadt
%P 431-438
%T Preconcepts and set representation of contexts