Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (January 2008), ”Tidal radii and masses of open clusters”, Astronomy and Astrophysics 477 (1): 165–172, doi:10.1051/0004-6361:20078525, Bibcode: 2008A&A...477..165P
Hartman, J. D.; Gaudi, B. S.; Pinsonneault, M. H.; Stanek, K. Z.; Holman, M. J.; McLeod, B. A.; Meibom, S.; Barranco, J. A.; et al. (January 2009), ”Deep MMT Transit Survey of the Open Cluster M37. III. Stellar Rotation at 550 Myr”, The Astrophysical Journal 691 (1): 342–364, doi:10.1088/0004-637X/691/1/342, Bibcode: 2009ApJ...691..342H
Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (January 2008), ”Tidal radii and masses of open clusters”, Astronomy and Astrophysics 477 (1): 165–172, doi:10.1051/0004-6361:20078525, Bibcode: 2008A&A...477..165P
Hartman, J. D.; Gaudi, B. S.; Pinsonneault, M. H.; Stanek, K. Z.; Holman, M. J.; McLeod, B. A.; Meibom, S.; Barranco, J. A.; et al. (January 2009), ”Deep MMT Transit Survey of the Open Cluster M37. III. Stellar Rotation at 550 Myr”, The Astrophysical Journal 691 (1): 342–364, doi:10.1088/0004-637X/691/1/342, Bibcode: 2009ApJ...691..342H