MathSciNet bibliographic data MR1412759 15A24 (93C05) Zhan, Xingzhi; Xie, Jianjun On the matrix equation \$X+A^{\ssf T}X^{-1}A=I\$$X+A^{\ssf T}X^{-1}A=I$. Linear Algebra Appl. 247 (1996), 337–345. Article

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