Inverse scattering on CC manifolds.    Inverse problems and Imaging 3, 3, (2009) 537--550.
 AH manifolds with polyhomogeneous metric.        Diff. and Int. Eqs. 24 9-10, (2011) 973--1000.
 An eigenvalue problem for the infinity-Laplacian.   Joint with T. Bhattacharya       Accepted in EJDE