We have information from several sources:
African Grasses—Glenn W. Burton
Magness, J.R., G.M. Markle, C.C. Compton. 1971. Food and feed crops of the United States.
Doob (Cynodon dactylon): Traditional Medicinal Uses in India—Pankaj Oudhia
Handbook of Energy Crops—James A. Duke. 1983. unpublished.