Citation:Fressin F, Torres G, Rowe JF, Charbonneau D, Rogers LA, Ballard S, Batalha NM, Borucki WJ, Bryson ST, Buchhave LA, et al. Two Earth-sized planets orbiting Kepler-20. \nat. 2012;482 (7384) :195-198.Download CitationDOI BibTex Tagged XML Date Published:feb DOI