| 其他書名 | A Comparison of the S1-branch Demand System and the Constant Elasticity of Demand System |
| 出版 | Virginia Polytechnic Institute and State University, Department of Agricultural Economics, 1981 |
| URL | http://books.google.com.hk/books?id=c2CCrg8gkGAC&hl=&source=gbs_api |