Wang L, Lam TT, Xu S, Dai Z, Zhou L, Feng T, Guo P, Dunn CW, Jones BR, Bradley T, Zhu H, Guan Y, Jiang Y, Yu G (2020). “treeio: an R package for phylogenetic tree input and output with richly annotated and associated data.” Molecular Biology and Evolution, 37, 599-603. doi: 10.1093/molbev/msz240.