http://caod.oriprobe.com/articles/5646776/A_Study_[...] | Item not verified | PDF Reader | Item is within a limited-access website | Guide page only, Chinese |
http://en.cnki.com.cn/Article_en/CJFDTOTAL-CDXU200[...] | Item not verified | PDF Reader | Item is within a limited-access website | Guide page only, English |