Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008), “Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics”, 《The Astrophysical Journal》 687 (2): 1264–1293, arXiv:0807.1686, Bibcode:2008ApJ...687.1264M, doi:10.1086/591785
Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008), “Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics”, 《The Astrophysical Journal》 687 (2): 1264–1293, arXiv:0807.1686, Bibcode:2008ApJ...687.1264M, doi:10.1086/591785
Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008), “Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics”, 《The Astrophysical Journal》 687 (2): 1264–1293, arXiv:0807.1686, Bibcode:2008ApJ...687.1264M, doi:10.1086/591785