1Huan Zhongdan,Zhang Zhongren.A Necessary and Sufficient Condition of Positive Solutions to the BSZ Transformation Model[].Shimane Journal of Policy Studies.2005
2Huan Zhongdan,Zhang Zhongren.A Necessary and Sufficient Condition of Positive Solutions to the BSZ Transformation Model[].Shimane Journal of Policy Studies.2005
3uan Zhongdan,Zhang Zhongren.A Necessary and Sufficient Condition of Positive Solutions to the BSZ Transformation Model[].Shimane Journal of Policy Studies.2005