1. Oregon Seed Association. http://www.oregonseed.org/ (2014). Accessed 25 Sept 2015.
2. Young W. Crop and soil science, Oregon State University. http://cropandsoil.oregonstate.edu/content/oregon-grass-and-legume-seed-production (2014). Accessed 25 Sept 2015.
3. Alderman S, Coats D, Crowe F. Impact of Ergot on Kentucky bluegrass grown for seed in Northeastern Oregon. Plant Dis. 1996;80:853–5.
4. Pažoutová S. Evolutionary strategy of Claviceps. In: White JF, Bacon CW, Hywel-Jones NL, Spatafora JW, editors. Clavicipitalean Fungi: evolutionary biology, chemistry, biocontrol and cultural impacts. New York: Marcel Dekker; 2003. p. 329–54.
5. Schumann GL. Ergot. Plant Health Inst. 2000. doi: 10.1094/PHI-I-2000-1016-01 .