1. Walker, A. R., Strawberry Root Rot. Proc. Canad. Phytopath. Soc., 16–19; 1929.
2. Strong, H. C., and Strong, M. C., Investigations on the Black Root of Strawberries. Phytopathology, 21, 1041–60; 1931.
3. Zeller, S. M., A Strawberry Disease caused by Rhyzoctonia. Oregon Agric. Expt. Stn. Bull., 295, 1932.