S. G.  Aiken, Consaul, L. L., Davis, J. I., and Manos, P. S., ?Systematic inferences from variation in isozyme profiles of arctic and alpine cespitose Festuca (Poaceae)?, American Journal of Botany, vol. 80, pp. 76-82, 1993.

S. G.  Aiken and Lefkovitch, L. P., ?On the separation of two species within Festuca subg. Obtusae (Poaceae)?, Taxon, vol. 42, pp. 323-337, 1993.

L. L.  Consaul and Aiken, S. G., ?Limited taxonomic value of palea intercostal characteristics in North American Festuca (Poaceae)?, Canadian Journal of Botany, vol. 71, pp. 1651-1659, 1993.