@phylogenomics Funny/interesting typesetting trainwreck in equation 4 of PLOS PhyEco paper. English letters were replaced by Greek!
— Michael Hall (@mikehall_dal) March 30, 2015
So I went and found the paper.
Wu D, Jospin G, Eisen JA (2013) Systematic Identification of Gene Families for Use as “Markers” for Phylogenetic and Phylogeny-Driven Ecological Studies of Bacteria and Archaea and Their Major Subgroups. PLoS ONE 8(10): e77033. doi:10.1371/journal.pone.0077033
And discovered what he was pointing to
arXiv version of the paper and it looked correct.