MathSciNet bibliographic data MR1999138 (2004g:15021) 15A24 Sun, Ji-guang Perturbation analysis of the matrix equation $X=Q+A\sp H(\hat X-C)\sp {-1}A$$X=Q+A\sp H(\hat X-C)\sp {-1}A$. Linear Algebra Appl. 372 (2003), 33–51. Article

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