1. Water flow using density of area;Briggs;CSIRO Division of Information Technology, Tech. Rept.,1989
2. Drainage with divergent flow over a regular grid;Freeman,1989
3. Terrain display and analysis for hydrology;Freeman,1988
4. A summary of some surface fitting and contouring programs for noisy data;Hutchinson;CSIRO Division of Water and Land Resources, Consulting Rept. ACT 84/6,1984
5. Calculation of hydrologically sound digital elevation models;Hutchinson,1988