7The Key to the Rosgen Classification of Natural Rivers[EB/OL].2009-4-28.http://www,wildlandhydrology,com/assets/ARM_5-3.pdf.
8Kail J.Using river sinuosity to assess the Ecological Status of streams and rivers[EB/OL] 2009-4-28.http:/www.hlug.de/twinning/water/dokumente/cp/cp_7/Kail_morph_risk_assess_short.pdf.