6Nijkamp P,Papageo rgiou Y Y.Nonlinear evolution of dynamic spatial systems:the relevance of chaos and ecologicallybased models[J].Regional Science and Urban Economics 1995,25:183-210.
5Nijkamp P,Papageo rgiou Y Y.Nonlinear evolution of dynamic spatial systems:the relevance of chaos and ecologicallybased models[J].Regional Science and Urban Economics 1995,25:183-210.