%0 Journal Article %T Inverse boundary value problem for linear Schr£żdinger equation in two dimensions %A Oleg Yu. Imanuvilov %A Masahiro Yamamoto %J Mathematics %D 2012 %I arXiv %X We relax the regularity condition on potentials of Schr\"odinger equations in the uniqueness results in \cite{EB} and \cite{IY2} for the inverse boundary value problem of determining a potential by Dirichlet-to-Neumann map. %U http://arxiv.org/abs/1208.3775v1