Pressure broadening and shift of K D1 and D2 lines in the presence of 3He and 21Ne Rujie Li, Yang Li, Liwei Jiang, Wei Quan, Ming Ding and Jiancheng Fang Eur. Phys. J. D, 70 6 (2016) 139 Published online: 16 June 2016 DOI: 10.1140/epjd/e2016-60734-4