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Israelsen, Clark E.; McKendrick, Scott S.; Bagley, Clell V. (1 October 2006). "Poisonous Plants and Equines"(PDF). Utah State University. Archived from the original(PDF) on 12 January 2011. Retrieved 8 December 2010.
Kohnke, John. "Australian stringhalt"(PDF). South East Victoria Equine Network. Archived from the original(PDF) on 21 February 2011. Retrieved 6 December 2010.