1. Agrawala M, and Stolte C., 2001, Rendering effective route maps: improving usability through generalization, in SIGGRAPH2001 Conference, Computer Graphics Proceedings, pp: 241–250, ACM Press.
2. Ai T., 2007, The drainage network extraction from contour lines for contour line generalization. ISPRS Journal of Photogrammetry and Remote Sensing 62, 93–103.
3. Anand S, Avelar S, Ware J. M and Jackson M, 2007, Automated schematic map production using Simulated Annealing and Gradient Descent approaches, 15th Annual GIS Research UK Conference (GISRUK 2007), Dublin, Ireland.
4. Avelar S. 2002. Schematic Maps on Demand: Design, Modeling and Visualization. Dissertation for Doctor’s Degree. Zurich: Swiss Federal Institute of Technology, Switzerland.
5. Avelar, S., 2007. Convergence analysis and quality criteria for an iterative schematization of networks. Geoinformatica, 11(4): 497–513