Precise radial velocities of giant stars - VI. A possible 2:1 resonant planet pair around the K giant star η CetiTrifon Trifonov, Sabine Reffert, Xianyu Tan, Man Hoi Lee and Andreas QuirrenbachA&A, 568 (2014) A64DOI: https://doi.org/10.1051/0004-6361/201322885
