Phylogeny and Divergence Times of Gymnosperms Inferred from Single-Copy Nuclear Genes Lu, Ying ; Ran, Jin-Hua ; Guo, Dong-Mei ; Yang, Zu-Yu ; Wang, Xiao-Quan Abstract Publication: PLoS ONE Pub Date: September 2014 DOI: 10.1371/journal.pone.0107679 Bibcode: 2014PLoSO...9j7679L