1. D. Coupland, and J.C. Caseley(1981 ) Environmental influences on the effects of glyphosate onAgropyron repens. Proc. AAB Conf. Grass Weeds in the United Kingdom. 177 -186 .
2. E. Kibler(1979 ) Freiland und Laborversuche zur Ahhaukinetik von Chlortoluron und Simazin in Boden in Gegenwart anderer Pflanzenschutz-mittel . Dissertation Universitat Hohenheim. pp.86 .
3. J.H. Orson(1981 ) The control ofBromus sterilisin cereals with herbicides. Agricultural Development and Advisory Service Results 1979 and 1980 . Proc. AAB. Conf. Grass Weeds in the United Kingdom. 291 -298 .