@Article{auzinger-schuh_98,
  author    = {Auzinger, T. and W.-D. Schuh},
  title     = {High-degree spherical harmonic analysis combining gridded and random distributed data sets},
  journal   = {Physics and Chemistry of the Earth},
  year      = {1998},
  volume    = {23},
  number    = {1},
  pages     = {19--23},
  doi       = {10.1016/S0079-1946(97)00236-X}
}