@misc{indiciaed899800011bc,
  title = {Advances in Time-Distance Helioseismology},
  author = {Duvall, Thomas L., Jr. and Beck, John G. and Gizon, Laurent and Kosovichev, Alexander F. and Oegerle, William},
  year = {2002},
  url = {https://ntrs.nasa.gov/citations/20020082906},
  note = {Source identifier: 20020082906}
}