@conference{8121,
  author = {J. Christensen-Dalsgaard and Douglas Gough},
  title = {Rotational inversion from global solar oscillations},
  year = {1984},
  url = {http://ulrich.astro.ucla.edu/JPL84-84/1984JPL84..84..79C.pdf},
  note = {JILA Pub. 2930},
}