4Baltagi B H. Econometric Analysis of Panel Data[M]. Second edition, New York: Wiley, 2001.
5Cheng H. Analysis of Panel Data[M].Cambridge: Cambridge Universi- ty Press, 2003.
6Neway W K . Semiparametric Efficient Bounds[J] . Journal of Applied Econometric, 1990,(5).
7Bickel P J. Efficient Estimation in the Errors in the Variables Models [J]. Annals of Statistics, 1987,(15).
8Park B U, Simar C. Efficient Semiparametric Estimations in Stochas- tic Frontier Models[J].Journal of the American Statistical Association, 1994,(89).
9Park B U, Sickles R C. Semiparametric Efficient Estimation of AR(1) Panel Data Models[J]. Journal of Econometric, 2003,(117).
10Bahagi B H , Li Q . A Lagrange Multiplier Test for the Error Compo- nent Model With Incomplete Panels[J]. Economent Rev,1990,(9).
