Skidmore A K. Terrain position as mapped from a gridded digital elevation model.International Journal of Geographical Information Systems, 1990, 4:33~49.
Peuker T K, Douglas D H. Detection of surface - specific points by local parallel processing of discrete terrain elevation data . Computer Graphics and Image Processing, 1975, (4): 375~387.
[19]
O'Callaghan J F, Mark D M. The extraction of drainage networks from digital elevation data. Computer Vision, Graphics, and Image Processing, 1984, 28:323~344.
[20]
Martz W, Garbrecht J. Numerical definition of drainage Network and subcatchment Areas from digital elevation models. Computers&Geosciences，1992, 18(6):747~761.
[21]
Yoeli P. Computer - assisted determination of the valley and ridge lines of digital terrain models . International Yearbook Cartographica, 1984，(24): 197~205.
[22]
Jenson S K, Domingue J O. Extraction topographic structure from digital elevation data for geographic information system analysis. Photogrammetric Engineering and Remote Sensing, 1988, 54(11):1593~1600.
[23]
Martz W, DeJong E. Catch: a Fortran program for measuring catchment area from digital elevation medels. Computers& Geosciences, 1988, 14(5):627~640.
[24]
Garbrecht J, Martz L W. Automated channel ordering and node indexing for raster channel networks. Computers& Geosciences, 1997, 23(9):901~906.
