1. Ahlers, D., Preusse, T., 2000. Ist Mehltau noch zu bekämpfen. DLG Mitteilungen, Pflanzenschutz Praxis, Agrarmanagement 3/00, pp. 46–48.
2. Brent, K.J., 1995. Fungicide resistance in crop pathogens: how can it be managed ? FRAC Monograph 1, GCPF, Brussels, 48pp.
3. Brent, K.J., Hollomon, D.W., 1998. Fungicide resistance: the assessment of risk. FRAC Monograph 2, GCPF, Brussels, 48pp.
4. The spread of Erysiphe graminis in pure and mixed stands of barley;Chin;Plant Pathol.,1984
5. Cook, 1976. Population Genetics. Chapman & Hall, London.