A. M. C.  Tang, Jeewon, R., and Hyde, K. D., ?Phylogenetic utility of protein (RPB2, b-tubulin) and ribosomal (LSU, SSU) gene sequences in the systematics of Sordariomycetes (Ascomycota, Fungi)?, Antonie van Leeuwenhoek, vol. 91, pp. 327-349, 2007.