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2. Deng, J., 1988b, Grey Control System: The Publishing House of Hua Zhong University of Science and Engineering, p. 337?341.
3. Yang, Y., Chou, D., et al., 1986, Precambrian Stratabound Copper Deposits in Xichang-Central Yunnan Region: The Publishing House of Chongqing, p. 337?346.