Prospektiv- konstruktiv - retrograd. Beurteilung von Methoden des Wissensmanagements aus philosophischer Perspektive. - Ruth Hagengruber; Hanno Schauer (Wissensmanagement, 2003)

Mapping the Multitude. Categories in Representations. - Ruth Hagengruber (Wissensmanagement, 2005)

Mapping the Multitude - Categories in a Process Ontology. - Ruth Hagengruber (Wissensmanagement (LNCS Volume), 2005)