Simpson, E. K.; Baliunas, S. L.; Henry, G. W.; Watson, C. A. (november 2010). ”Rotation periods of exoplanet host stars”. Monthly Notices of the Royal Astronomical Society 408 (3): sid. 1666–1679. doi:10.1111/j.1365-2966.2010.17230.x.
Roberto Sanchis-Ojeda, Josh N. Winn, Daniel C. Fabrycky (2012). Starspots and spin-orbit alignment for Kepler cool host stars. doi:10.1002/asna.201211765.