K. Kurzhals, M. Stoll, A. Bruhn, and D. Weiskopf. Symposium on Computational Aesthetics, Sketch-Based Interfaces and Modeling, and Non-Photorealistic Animation and Rendering (EXPRESSIVE, co-located with SIGGRAPH)., page 1:1-1:9. (2017)
M. Burch, T. Blascheck, C. Louka, and D. Weiskopf. Proceedings of the International Joint Proceedings of the 5th International Conference on Information Visualization Theory and Applications, IVAPP '14, (2014)