5Wackernagel M,Onisto L,Bello P,et al. National natural capital accounting with the ecological footprint concept [J].Ecological Economics, 1999(29):375-390.
5B. Wu, Y. Qi, C. Ma, H. Zhang, Harvest Evaluation Model and System of Fast-Growing and High-Yield Poplar Plantation, Mathematical and Computer Modelling, voL 51, no. 11 (2010) , pp. 1444-1452.
