9Chen Mianyun, Li Zhijun, Zhou Long, et al. SCGM-model and Grey Control of "Poor" Information Systems[J]. Kybernetes, 2004,33 (2) : 231-237.
10Li Zhi-jun, Zhang Lei, Chen Mian-yun, et al. Research and Application of Data Mining Method Based on Gray Trend Rela- tional Analysis[J]. Proceeding of PACIIA,2008(2) :98-101.
