If you use the OWL API for any work that is published, we would be grateful if you could cite our publications. There are currently two publications - one for the latest OWL API for OWL 1.1, and the original OWL 1.0 version of the API (also known as the WonderWeb API).
Matthew Horridge, Sean Bechhofer, Olaf Noppens. Igniting the OWL 1.1 Touch Paper: The OWL API. OWLED 2007, 3rd OWL Experienced and Directions Workshop, Innsbruck, Austria, June 2007. PDF
Sean Bechhofer, Phillip Lord, Raphael Volz. Cooking the Semantic Web with the OWL API. 2nd International Semantic Web Conference, ISWC, Sanibel Island, Florida, October 2003. PDF