M. Abtahi , R. Pourgholi , A. Shidfar
Nonlinear Analysis: Methods, Theory & Applications - 74, , 2462--2667 - January, 2011 - .
Publication year: 2011


The problem of identifying the coefficient in a square porous medium is considered. It is shown that under certain conditions of data f,g, and for a properly specified class A of admissible coefficients, there exists at least one a∈A such that (a,u) is a solution of the corresponding inverse problem.