1. [AAFRD] Alberta Agriculture Food and Rural Development.1999.Field crop statistics for Alberta. Production of field crops [On line]. Available athttp://www.agric.gov.ab.ca/economics/stats/stat_fldcrop.html(Verified 22 Sept. 1999).
2. Comparative studies on the development of the spike in wheat, barley, and rye;Banerjee S.;Z. Pflanzenzüchtung,1965
3. A crop calendar for spring wheat and for spring barley;Bauer A.;N. D. Farm Res.,1993