@article{5440,
  author = {N. Hurlburt and Juri Toomre and J. Massaguer and J.-P. Zahn},
  title = {Penetration below a convective zone},
  year = {1994},
  journal = {The Astrophysical Journal},
  volume = {421},
  pages = {245},
  month = {1994-01},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1994ApJ...421..245H},
  doi = {10.1086/173642},
}