An Uniqueness Result on Spherically Stratified Media with Interior   Transmission Eigenvalues
  Given a set of transmission eigenvalues, we describe the connection of such a set to the indicator functions in entire function theory. The indicator functions control the asymptotic growth rate of the solution of the Sturm-Liouville problem which has an uniqueness in the inverse spectral theory. Henceforth, the set of transmission eigenvalues has an inverse spectral property. 
Lung-Hui Chen
math.AP