Kraft, R. P., Studies of Stellar Rotation. V. The Dependence of Rotation on Age among Solar-Type Stars, Astrophysical Journal, 1967, 150: 551, Bibcode:1967ApJ...150..551K, doi:10.1086/149359
Kraft, R. P., Studies of Stellar Rotation. V. The Dependence of Rotation on Age among Solar-Type Stars, Astrophysical Journal, 1967, 150: 551, Bibcode:1967ApJ...150..551K, doi:10.1086/149359