Wen B, Xu S, Zhou R, Zhang B, Wang X, Liu X, Xu X and Liu S (2016). “PGA: an R/Bioconductor package for identification of novel peptides using a customized database derived from RNA-Seq.” BMC bioinformatics, 17, pp. 1. doi: 10.1186/s12859-016-1133-3, http://bmcbioinformatics.biomedcentral.com/articles/10.1186/s12859-016-1133-3.