title: [Electronic spectra and energy levels analysis of Ho3+ in Cs2NaYF6].
authors.affiliation: College of Mathematics and Physics, Chongqing University of Posts and Telecommunication, Chongqing 400065, China. zhouxj@cqupt.edu.cn
authors.forename: Xian-ju
authors.initials: XJ
authors.lastname: Zhou
authors.forename: Chong-dan
authors.initials: CD
authors.lastname: Ren
authors.forename: Bin
authors.initials: B
authors.lastname: Luo
authors.forename: Qiao-chun
authors.initials: QC
authors.lastname: Feng