7Trung T C, Gupta A D, Babel M S, et al. Assessment of different irrigation management models in Vietnam[J]. International Jour- nal of Water Resources Development, 2005, 21(3): 525-535.
8Goncalves J M, Pereira L S, Fang S X, et al. Modelling and multicriteria analysis of water saving scenarios for an irriga- tion district in the upper Yellow River Basin[J]. Agricultural Water Management, 2007, 94(1/3): 93-108.
9Embrechts M J. Visual explorations in clustering and data min- ing[M]. Rensselaer, Troy, NY: Bioinformatics Workshop, 2002.
10Hanson F. Knowledge represeniation in connectionist net- works[R]. Bell Communications Research Technical Report, 1987:21-22.