International Journal of Mathematics and Mathematical Sciences
Volume 10 (1987), Issue 4, Pages 825-827
doi:10.1155/S0161171287000929

An inverse problem for Helmholtz's equation

A.G. Ramm

Mathematics Department, Kansas State University, Manhattan 66506, KS, USA

Abstract

The refraction coefficient in Helmholtz's equation is found from the knowledge of a family of the solutions to this equation on two lines.