Abásolo Guerrero, M. J., A. E. De Giusti, and J. Blat Gimeno. “A Hierarchical Triangulation for Multiresolution Terrain Models”. Journal of Computer Science and Technology, vol. 1, no. 03, Oct. 2000, p. 13 p., https://journal.info.unlp.edu.ar/JCST/article/view/1005.