@conference{449,
  author = {Bradley Hindman and D. Haber and Juri Toomre and R. Bogart},
  title = {Fractional frequency shifts of local helioseismic modes with magnetic activity using ring-diagram analysis},
  year = {2001},
  journal = {unknown},
  month = {2001-01},
  publisher = {Astronomical Society of the Pacific},
  isbn = {1-58381-069-2},
  url = {http://adsabs.harvard.edu/full/2001IAUS..203..215H},
  note = {JILA Pub. 6987},
}