2Stone R. Linear Expenditure Systems and Demand Analysis: An Application to the Pattern of British Demand [ J]. The Economic Journal, 1954, 64 (255) : 511 -527.
3Liuch and Constantino. The Extended Linear Expenditure System [ J]. European Economics Review, 1973 (4) : 21 -32.
4Deaton A and Muellbauer 1. An Almost Ideal Demand System [ J ]. American Economies Review, 1980 (3) : 313 -326.
5Hsiao C. Analysis of Panel Data[ M]. Cambridge University Press, 2003, 20 -45.
6Matyas, Laszlo and Patrick Sevestre. The Econometrics of Panel Data: Handbook of Theory and Applications [ J]. Dordreeht: Kluwer Academic, 1992(2) : 49 -87.