[1]

G. Alessandrini, Stable determination of conductivity by boundary measurements, Appl. Anal., 27 (1988), 153172.

[2]

G. Alessandrini and M. Di Cristo, Stable determination of an inclusion by boundary measurements, SIAM J. Math. Anal., 37 (2005), 200217.

[3]

D. Arallumallige and V. Isakov, Increased stability in the continuation of solutions to the Helmholtz equation, Inverse Problems, 23 (2007), 16891698.

[4]

K. Astala and L. Päivärinta, Calderon's inverse conductivity problem in the plane, Ann. Math., 163 (2006), 265299.

[5]

G. Bao, S. Hou and P. Li, Inverse scattering by a continuation method with initial guesses from a direct imaging algorithm, J. Comput. Phys., 227 (2007), 755762.

[6]

A. L. Bukhgeim, Recovering a potential from Cauchy data in the twodimensional case, J. Inv. IllPosed Probl., 15 (2007), 1935.

[7]

I. Bushuyev, Stability of recovery of the nearfield wave from the scattering amplitude, Inverse Problems, 12 (1996), 859869.

[8]

A. P. Calderon, On an inverse boundary value problem, in "Seminar on Numerical Analysis and its Applications to Continuum Physics," Rio de Janeiro, (1980), 6573.

[9]

D. Colton, H. Haddar and M. Piana, The linear sampling method in inverse electromagnetic scattering theory, Inverse Problems, 19 (2003), S105S137.

[10]

L. Faddeev, Increasing solutions of the Schrödinger equation, Soviet Phys. Dokl., 10 (1966), 10331035.

[11]

P. Hähner, A periodic Faddeevtype solution operator, J. Diff. Equat., 128 (1996), 300308.

[12]

L. Hörmander, "Linear Partial Differential Operators," SpringerVerlag, Berlin, 1963.

[13]

T. Hrycak and V. Isakov, Increased stability in the continuation of solutions to the Helmholtz equation, Inverse Problems, 20 (2004), 697712.

[14]

V. Isakov, "Inverse Problems for Partial Differential Equations," SpringerVerlag, New York, 2006.

[15]

V. Isakov, "Increased Stability in the Continuation for the Helmholtz Equation with Variable Coefficient," in "Control Methods in PDEDynamical Systems," Contemp. Math., 426, AMS, (2007), 255269.

[16]

V. Isakov and A. Nachman, Global uniqueness for a twodimensional elliptic inverse problem, Trans. AMS, 347 (1995), 33753391.

[17]

F. John, Continuous dependence on data for solutions of partial differential equations with a prescribed bound, Comm. Pure Appl. Math., 13 (1960), 551587.

[18]

N. Mandache, Exponential instability in an inverse problem for the Schrödinger equation, Inverse Problems, 17 (2001), 14351444.

[19]

A. Nachman, Global Uniqueness for a two dimensional inverse boundary value problem, Ann. Math., 142 (1996), 7196.

[20]

F. Natterer and F. Wübbeling, Marching schemes for inverse acoustic scattering problem, Numer. Math., 100 (2005), 697710.

[21]

R. Novikov, The $\bar{\partial}$approach to monochromatic inverse scattering in three dimensions, J. Geom. Anal., 18 (2008), 612631.

[22]

V. Palamodov, Stability in diffraction tomography and a nonlinear "basic theorem," J. d' Anal. Math., 91 (2003), 247268.

[23]

J. Sylvester and G. Uhlmann, Global uniqueness theorem for an inverse boundary value problem, Ann. Math., 125 (1987), 153169.

[24]

J. Sylvester and G. Uhlmann, Inverse boundary value problems at the boundarycontinuous dependence, Comm. Pure Appl. Math., 41 (1988), 197221.

[25]

M. Taylor, "Partial Differential Equations. II," SpringerVerlag, New York, 1997.
