Ontology-Based Meta-Inferencing. - Jürgen Angele; Eddie Mönch; Henrik Oppermann; Steffen Staab; Dirk Wenke (IICAI, 2003)

Ontology-Based Query and Answering in Chemistry: OntoNova @ Project Halo. - Jürgen Angele; Eddie Mönch; Henrik Oppermann; Steffen Staab; Dirk Wenke (ISWC, 2003)

Project Halo: Towards a Digital Aristotle. - Noah S. Friedland; Paul G. Allen; Gavin Matthews; Michael Witbrock; David Baxter; Jon Curtis; Blake Shepard; Pierluigi Miraglia; Jürgen Angele; Steffen Staab; Eddie Mönch; Henrik Oppermann; et al. (AI Mag., 2004)

Halo I: A Controlled Experiment for Large Scale Knowledge Base Development. - Jürgen Angele; Eddie Mönch; Henrik Oppermann; Dirk Wenke (LPNMR, 2005)