MathSciNet bibliographic data MR2305136 (2008a:47056) 47B49 Du, Shuanping; Hou, Jinchuan; Bai, Zhaofang Nonlinear maps preserving similarity on \$\scr B(H)\$$\scr B(H)$. Linear Algebra Appl. 422 (2007), no. 2-3, 506–516. Article

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