TOSCANA-Systems Based on Thesauri. - Bernd Groh; Selma Strahringer; Rudolf Wille (ICCS, 1998)

Algorithms for Creating Relational Power Context Families from Conceptual Graphs. - Bernd Groh; Peter W. Eklund (ICCS, 1999)

A Contextual-Logic Extension of TOSCANA. - Peter W. Eklund; Bernd Groh; Gerd Stumme; Rudolf Wille (ICCS, 2000)

Lattices of Triadic Concept Graphs. - Bernd Groh; Rudolf Wille (ICCS, 2000)