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… solutions to the Schrodinger equations, Comm. in Applied Math., 9 (2005), 327 - 336. Ziqi Sun, Inverse boundary value problems for elliptic equations, Advances in Mathematics and Its Applications, USTC, (2008), 154-175 An inverse boundary value problem for semilinear elliptic equation. Electorn J. Differential Equation, 37 (2010)
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