1. Image Models
2. General geomorphometry, derivatives of altitude and descriptive statistics;Evans,1972
3. An approach to processing dense grid digital elevation models for use in LANDSAT terrain classification;Franklin,1986
4. An assessment of information from digital elevation model variables and LANDSAT MSS data for an area of high relief;Franklin,1984
5. Textural features for image classification: IEEE Transactions on Systems;Haralick;Man and Cybernetics,1973