8George P,Gerasimoula D,Nicolaos L.A long-term study of temporal hydrochemical data in a shallow lake using multivariate statistical techniques[J].Ecological Modelling,2006,193:759-776.
9De Ceballos,B S O Koning,A De Olivera,et al.Dam reservoir eutrophication:a simplified technique for a fast diagnosis of an environmental degradation[J].Water Res.,1998,32(11):3477-3483.
