[graph23_on_article
     [an article,
          Coverage: FCA_domain,
          title: "Formal Concept Analysis: Mathematical Foundations",
          Creator: "Bernhard Ganter, Rudolf Wille",
          object of: (a publishing,
               time: 1999 ,
               agent: Springer_Verlag),
          url: http://www.math.tu-dresden.de/~ganter/FCAbooks.html]
](06/05/2024);