中国科学院数学与系统科学研究院期刊网
Productivity Comprehensive Evaluation System based on GIS for Cropping-livestock System of Yangtze Delta Plain
Wei Jian ZHANG;Chang Xin LI;Jin Xia FENG;Xi Gu ZHANG
Systems Engineering - Theory & Practice . 2002, (1): 134 -139 .  DOI: 10.12011/1000-6788(2002)1-134