3Golub G H,Reinsch C.Singular value decomposition and leastsquares solutions[J].Numerische Mathematik, 1970(14) :403-420.
4Wu Xi-zhi,Zhang Xi-bin.Local influence on a selected coefficient in linear regression model[J].Acta Scientiarum Naturalium Universitatis Nankaiensis, 1996,29( 2 ) : 28-33.
5Cook R D,Weisberg S.Residual and influence in regression[M]. New York and London:Chapman and Hall,1982:58-65.
6Bates D M,Watts D G.Nonlinear regression analysis and its applications[M].[S.l.]:John Wiley & Sons, Inc, 1988:152-159.
