1. Continuous line drawings via the traveling salesman problem
2. C. S. Kaplan and R. Bosch. "TSP Art." Proceedings of the 2005 Renaissance Banff Bridges Mathematical Connections in Art, Music, and Science Conference, edited by Reza Sarhangi and Robert V. Moody, pp.301-308. Winfield, KS: Central Plain Book Manufacturing, 2005.