OntoTrack: Fast Browsing and Easy Editing of Large Ontologie. - Thorsten Liebig; Olaf Noppens (EON, 2003)

OntoTrack: Combining Browsing and Editing with Reasoning and Explaining for OWL Lite Ontologies. - Thorsten Liebig; Olaf Noppens (ISWC, 2004)

Explanation Support for OWL Authoring. - Thorsten Liebig; Friedrich W. von Henke; Olaf Noppens (ExaCt, 2005)

Building Applications and Tools for OWL - Experiences and Suggestions. - Thorsten Liebig; Marko Luther; Olaf Noppens; Massimo Paolucci 001; Matthias Wagner 001 (OWLED, 2005)

OntoTrack: A semantic approach for ontology authoring. - Thorsten Liebig; Olaf Noppens (J. Web Semant., 2005)

A Tableaux-based Mobile DL Reasoner - An Experience Report. - Felix Müller; Michael Hanselmann; Thorsten Liebig; Olaf Noppens (Description Logics, 2006)

DIG 2.0 – Towards a Flexible Interface for Description Logic Reasoners. - Sean Bechhofer; Thorsten Liebig; Marko Luther; Olaf Noppens; Peter F. Patel-Schneider; Boontawee Suntisrivaraporn; Anni-Yasmin Turhan; Timo Weithöner (OWLED, 2006)

Understanding Large Volumes of Interconnected Individuals by Visual Exploration. - Olaf Noppens; Thorsten Liebig (ESWC, 2007)

Real-World Reasoning with OWL. - Timo Weithöner; Thorsten Liebig; Marko Luther; Sebastian Böhm; Friedrich W. von Henke; Olaf Noppens (ESWC, 2007)

Igniting the OWL 1.1 Touch Paper: The OWL API. - Matthew Horridge; Sean Bechhofer; Olaf Noppens (OWLED, 2007)

Realizing the hidden: interactive visualization and analysis of large volumes of structured data. - Olaf Noppens; Thorsten Liebig (AVI, 2008)

OWLlink: DIG for OWL 2. - Thorsten Liebig; Marko Luther; Olaf Noppens; Mariano Rodriguez; Diego Calvanese; Michael Wessel; Matthew Horridge; Sean Bechhofer; Dmitry Tsarkov; Evren Sirin (OWLED, 2008)

Who the Heck Is the Father of Bob?. - Marko Luther; Thorsten Liebig; Sebastian Böhm; Olaf Noppens (ESWC, 2009)

Organizing Knowledge as an Ontology of the Domain of Resilient Computing by Means of Natural Language Processing - An Experience Report -. - Algirdas Avizienis; Gintare Grigonyte; Johann Haller; Friedrich W. von Henke; Thorsten Liebig; Olaf Noppens (FLAIRS, 2009)

VIScover: Visualizing, exploring, and analysing structured data. - Thorsten Liebig; Olaf Noppens; Friedrich W. von Henke (IEEE VAST, 2009)

The OWLlink Protocol. - Thorsten Liebig; Marko Luther; Olaf Noppens (OWLED, 2009)

Negative Property Assertion Pattern (NPAs). - Olaf Noppens (WOP, 2009)

Concept Partition Pattern. - Olaf Noppens (WOP, 2009)

Ontology Patterns and Beyond - Towards a Universal Pattern Language. - Olaf Noppens; Thorsten Liebig (WOP, 2009)

The OWLlink API: Teaching OWL Components a Common Protocol. - Olaf Noppens; Marko Luther; Thorsten Liebig (OWLED, 2010)

OWLlink. - Thorsten Liebig; Marko Luther; Olaf Noppens; Michael Wessel (Semantic Web, 2011)

Ontology visualization and analysis. - Olaf Noppens (2013)