1. Adams, P.B. and Papavizas, G.C. (1971). Effect of inoculum density of Sclerotium cepivorum and some soil environmental factors on disease severity. Phytopathology 61: 1253–1256.
2. Crowe, F.J. and Hall, D.H. (1980). Soil temperature and moisture effects on sclerotium germination and infection of onion seedlings by Sclerotium cepivorum. Phytopathology 70: 74–78.