1. Asher, M.J.C., 1981. The expression of partial resistance to powdery mildew in barley seedlings. In: M.J.C., Asher, R.P., Ellis, A.M., Hayter & R.N.H., Whitehouse (Eds), Barley Genetics IV, pp. 466–471. Edinburgh Univ. Press, Edinburgh.
2. Asher, M.J.C., W.T.B., Thomas & C.E., Thomas, 1983. The genetical control of incomplete forms of resistance to Erysiphe graminis in spring barley. Ann. Appl. Biol. 103: 149–156.
3. Brown, J.K.M. & J. Helms Jorgensen, 1991. A catalogue of mildew resistance genes in European barley varieties. In: J. Helms Jorgensen, (Ed) Integrated control of cereal mildews: virulence patterns and their change. Riso National Laboratory pp. 263–286.
4. Czembor, H. & E., Gacek, 1989. Disease incidence and yield of spring barley cultivars in pure stands and mixtures. Vortr. Pflanzenzüchtg. 15: 3–12.
5. Gacek, E. & J., Nadziak, 1988. [Yield and susceptibility to powdery mildew (Erysiphe graminis f.sp. hordei) in cultivar mixtures of winter barley]. Biuletyn Instytutu Hodowli i Aklimatyzacji Roslin (1988) 165: 5–14.