On the inverse conductivity problem

It is shown here that for the boundary value problem div([email protected]?u)[email protected](x^*)inR^n,u(x)->0as|x|->~ in order to identify the coefficient a, one needs on additional data u(x,x^*)=g(x,x^*), where [email protected][email protected]"1,x^*@[email protected]"2,@C"1,@C"2 are two open nonempty subsurfaces of @[email protected] (@W is a domain with analytic boundary which contains a bounded set V) and [email protected]?H^2^,^pp>=n/2 and a satisfies conditions of Lemma 2. Here we also prove that the uniqueness of a entering to the problem the additional data.