P. Chapman, G. Stapleton, J. Howse, and I. Oliver. 2011 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC), page 87-94. (September 2011)
T. Nguyen, and W. Siberski. in Proceedings of the second International Workshop on Ordering, Reasoning, co-located with the 12th International Semantic Web Conference (ISWC 2013), Vol-1059, page 43-54. CEUR Workshop Proceedings, (2013)
C. Elsenbroich, O. Kutz, and U. Sattler. Proceedings of the OWLED*06 Workshop on OWL: Experiences and Directions, volume 216 of CEUR-WS.org, (November 2006)