Lohmann, S., Negru, S., Haag F., Ertl, T.: VOWL 2: User-Oriented Visualization of Ontologies. Proceedings of the 19th International Conference on Knowledge Engineering and Knowledge Management (EKAW '14). Springer, 2014; pp. 266-281 [BibTex]
There will be a workshop on Visualizations and User Interfaces for Ontologies and Linked Data at this year's International Semantic Web Conference.