@article{GrunerBarnes2020,
  author    = {David Gruner and Sydney A. Barnes},
  title     = {Rotation periods for cool stars in the open cluster Ruprecht 147 (NGC 6774) Implications for gyrochronology},
  journal   = {Astronomy and astrophysics : an international weekly journal},
  volume    = {644},
  doi       = {10.1051/0004-6361/202038984},
  year      = {2020},
}