1. Berkeley, G. H., Root rots of certain non-cereal crops. Botan. Rev. 10, 67–123 (1944).
2. Harper, J. L., Studies in seeds and seedlings mortality. V. Direct and indirect influence of low temperatures on the mortality of maize. New Phytol.55, 35–44 (1956).
3. Husain, S. S. and McKeen, W. E., Rhizoctonia fragarie sp. nov. in relation to strawberry degeneration in southwestern Ontario. Phytopathology53, 532–540 (1963).
4. Husain, S. S., and McKeen, W. E., Interactions between strawberry roots and Rhizoctonia fragariae. Phytopathology53, 541–545 (1963).
5. Nezgovorov, L. A., On the causes of enhanced pathogenecity of Pythium on cold soils. (In Russian). Fiziologiya rasteniy10, 55–64 (1963).