@article{:64, author = {}, title = {}, publisher = {Journal of Guizhou University of Finance and Economics}, year = {2011}, journal = {Journal of Guizhou University of Finance and Economics}, volume = {29}, number = {3}, eid = {64}, numpages = {0}, pages = {64}, keywords = {}, url = {https://gcxb.gufe.edu.cn/EN/abstract/article_8461.shtml}, doi = {} }