Park, B.U.; Sickles, R.C.; Simar, L. - Center for Operations Research and Econometrics (CORE), … - 1996
This paper complements the results of Hausman and Taylor (1981) and Cornewell, Schmidt and Sickles (1990) and generalizes Park and Simar (1994) by examining the semiparametric efficient estimation of panel models in which the random effects and the regressors have certain patterns of correlation.