Forrester, J.W.Principles of SystemsWright -Allen PressCambridge, Massachusetts1968
2.
Fleming, G.Fahmy, M.Some Mathematical Concepts for Simulating the Water and Sediment Systems of a Natural Watershed Area Internal Report HO-73-26Department of Civil Engineering Strathclyde University Glasgow, Scotland 1973
3.
Crawford, N.H.Linsley, R.K.Digital Simulation in Hydrology: Stanford Watershed Model IV Technical Report No. 39 Department of Civil EngineeringStanford UniversityStanford, California July 1966
