1Rubin D B. Multiple imputation:a primer[J]. Statistical Methods in Medical Research, 1999,8( 1 ) :3 - 15.
2James M R. Inference for imputation estimators[ J]. Biometrika,2000,87 (1) :113 - 124.
3Dempster A P, Larid N M, Rubin D B. Maximum likelihood from incomplete data via the EM algorithm [ J ]. Journal of the Royal Statistical Society, Series B, 1977,39 ( 1 ) : 1 - 38.
4Healy M J R,Westmacott M. Missing values in experiments analyzed on automatic computers[ J]. Applied Statistics, 1956,5:203 - 206.
5Sandro Scheid. Selection Models for Nonignorable Missing Data [ D ]. Germany:Peter Lang GmbH,2004.
2Himmblau D M. Applied nonlinear programming [M]. Mc Graw-Hill Book Compang , 1972.
3Sober G A F, Wild G J. Nonlinearregression[M]. NewYork: JohmWilley&Sons, Inc, 1989.
4Silverman B W. Spline smoothing: the cqulivalent variable kernel method[J]. Ann. Statist, 1984, 12: 896-916.
5Wahba G. Cross Validated Spline methods for the estimation of .multivariate function from data on functions [ M ]. Statistical : Lowa State Univ. Press, 1984.
