%0 Conference Paper %1 LehmannWille95 %A Lehmann, Fritz %A Wille, Rudolf %B Conceptual structures: applications, implementation and theory %C Berlin--Heidelberg--New~York %D 1995 %E Ellis, G. %E Levinson, R. %E Rich, W. %E Sowa, J. F. %I Springer--Verlag %K triadic formal concept lattices analysis fba begriffsanalyse forschungsgruppe tu ag1 formale darmstadt fca %N 954 %P 32-43 %T A triadic approach to formal concept analysis