Perturbation theory for the generalized Bott-Duffin inverse and its applications. - Guoliang Chen 002; Guo-Ming Liu; Yifeng Xue (Appl. Math. Comput., 2002)

The expression of the generalized Bott-Duffin inverse and its perturbation theory. - Yifeng Xue; Guoliang Chen 002 (Appl. Math. Comput., 2002)

Some equivalent conditions of stable perturbation of operators in Hilbert spaces. - Yifeng Xue; Guoliang Chen 002 (Appl. Math. Comput., 2004)