@inbook{4576,
  author = {Douglas Gough and A. Kosovichev},
  title = {Using Helioseismic Data to Probe the Hydrogen Abundance in the Solar Core},
  year = {1990},
  volume = {159},
  number = {Astrophysics and Space Science Library},
  pages = {327-340},
  publisher = {Springer Netherlands},
  address = {Dordrecht},
  issn = {0067-0057},
  isbn = {978-94-010-6730-0},
  doi = {10.1007/978-94-009-0541-2_27},
}