Kepler-20: A Sun-like Star with Three Sub-Neptune Exoplanets and Two Earth-size CandidatesDOI: info:10.1088/0004-637X/749/1/15v. 74915
Gautier, Thomas N., III, Charbonneau, David, Rowe, Jason F., Marcy, Geoffrey W., Isaacson, Howard, Torres, Guillermo, Fressin, Francois, Rogers, Leslie A., Désert, Jean-Michel, Buchhave, Lars A., Latham, David W., Quinn, Samuel N., Ciardi, David R., Fabrycky, Daniel C., Ford, Eric B., Gilliland, Ronald L., Walkowicz, Lucianne M., Bryson, Stephen T., Cochran, William D., Endl, Michael, Fischer, Debra A., Howell, Steve B., Horch, Elliott P., Barclay, Thomas, Batalha, Natalie et al. 2012. "Kepler-20: A Sun-like Star with Three Sub-Neptune Exoplanets and Two Earth-size Candidates." The Astrophysical Journal, 749 15. https://doi.org/10.1088/0004-637X/749/1/15.