Citation:Xue L, Shen S, Liu Y, Tian Y. Comparison between two cognitive map externalization methods: A case study of Beijing. Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis [Internet]. 2008;44:413-420.ExportBibTex EndNote Tagged EndNote XML 附注:施引文献 2Website