@article{ForbrigerGaoMalischewskyetal.2020,
  author    = {Thomas Forbriger and Lingli Gao and Peter Malischewsky and Matthias Ohrnberger and Yudi Pan},
  title     = {A single Rayleigh mode may exist with multiple values of phase-velocity at one frequency},
  journal   = {Geophysical journal international},
  volume    = {222},
  number    = {1},
  pages     = {582 -- 594},
  doi       = {10.1093/gji/ggaa123},
  year      = {2020},
}