S. G.  Aiken and Fedak, G., ?Chromosome numbers in North American Festuca (Poaceae)?, Canadian Journal of Botany, vol. 70, pp. 1940-1944, 1991.

S. G.  Aiken and Fedak, G., ?Cytotaxonomic observations on North American Festuca (Poaceae)?, Canadian Journal of Botany, vol. 70, pp. 1940-1940, 1992.