4Ubertini L, Manciola P, Casadei S. Evaluation of the minimum instream flow of the Tiber river basin [ J]. Environmental Quality in Watersheds, 1996, 41(2) :125 -136.
5Gippel G J. Stewardson M J. Use of wetted perimeter in defining minimum environmental flows [ J ]. Regulated Rivers: Research and Management, 1998,14(1) : 53 -67.
6Tennant D L. Instream flow regimes for fish, wildlife, recreation, and related environmental resources, in Orsbom[A], J. F. and Allman, C.H. (eds) , Proceedings of Symposium and Specialty Conference on Instream Flow Needs Ⅱ[ C ]. American Fisheries Society, Bethesda, Maryland, 1976, 359-373.