Levitina, Tatiana Max Planck Institute for Solar System Research, Max Planck Society;
Amodio, P., Arnold, A., Levitina, T., Settanni, G., & Weinmueller, E. B. (2021). On the Abramov approach for the approximation of whispering gallery modes in prolate spheroids. Applied Mathematics and Computation, 409: 125599. doi:10.1016/j.amc.2020.125599.