1. J. P. Brennan, E. J. Warham, J. Hernandez, D. Byerlee, and F. Coronel, 1990 : Economic losses from KB of wheat in Mexico. CIMMYT Economics Working Paper 90/02. CIMMYT, Mexico, D. F., Mexico.
2. COMMONWEALTH MYCOLOGICAL INSTITUTE (CMI) , 1974 : Distribution Maps of Plant Diseases. No. 173, 3rd Edition. Commonwealth Agricultural Bureaux, Kew, England.