D. Johnson, and T. Jankun-Kelly. Proceedings of graphics interface 2008, page 163--168. Toronto, Ont., Canada, Canada, Canadian Information Processing Society, (2008)
W. Fikkert, M. D'Ambros, T. Bierz, and T. Jankun-Kelly. Human-Centered Visualization Environments, volume 4417 of Lecture Notes in Computer Science, page 77-162. Springer, (2006)