1. Hillslope Form and Process 1972
2. Differential and Integral Calculus 1937 2
3. DURY, G.H., TRANSACTIONS OF THE INSTITUTE OF BRITISH GEOGRAPHERS 57: 139 (1972).
4. King, L. C., Geological Society of America Bulletin 64: 721 (1953).
5. CSIRO DIVISION OF SOILS TECHNICAL PAPER 1971 6 A computer program for fitting non-linear regression models to data by least squares