R. J.  Mason-Gamer, ?Reticulate evolution and origins of northern hemisphere allopolyploid Elymus (Triticeae)?, in IBC, Vienna, 2005.

R. J.  Mason-Gamer, ?Mason-Gamer (2007)?, Aliso - Monocots: comparative biology and evolution - Poales., vol. 23, pp. 372-379, 2007.

R. J.  Mason-Gamer and Kellogg, E. A., ?Testing for phylogenetic conflict among molecular data sets in the tribe Triticeae  (Gramineae)?, Systematic Biology, vol. 45, pp. 522-543, 1996.