Schueth, Dorothee Max Planck Institute for Mathematics, Max Planck Society;
Gordon, Carolyn S. Max Planck Institute for Mathematics, Max Planck Society;
Schueth, D., & Gordon, C. S. (2003). Isospectral potentials and conformally equivalent isospectral metrics on spheres, balls and Lie groups. Journal of Geometric Analysis, 13(2), 300-328.