@article{:78, 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 = {2}, eid = {78}, numpages = {0}, pages = {78}, keywords = {}, url = {https://gcxb.gufe.edu.cn/EN/abstract/article_8444.shtml}, doi = {} }