1. Day, G.N.: 1985,Journal of WaterResources Planning and Management, American Society of Civil Engineers,111, pp.157–170.
2. Environmental systems Reasearch Institute: 1992,ARC/INFO 6.1 user's guide. Redlands, CA.
3. Fulp, T.J., Vickers, W.B., Williams, B., and King, D.L.: 1995,in L. Ahuja, J. Leppert, K. Rojas, and E. Seely, (eds.),Workshop on computer applications in water management. Colorado Water Resources Research Institute, Fort Collins, CO., Information Series No.79, pp. 24–27.
4. INGRES Corporation: 1991,INGRES/SQL Reference Guide for the UNIX and VMS Operating Systems. Alameda, CA.
5. Leavesley, G. H, Lichty, R.W., Troutman, B. M., and Saindon, L.G.: 1983, “Precipitation-Runoff Modeling System: User's Manual.”U.S. Geological Survey Water Resources Investigations Report 83-4238.