1. ADAS Leaflet 586. 1982. Cereal aphids. Ministry of Agriculture, Fisheries and Food, London. Reference book 186.
2. Some influences of veget-ational diversity on insect communities of Georgia Soybean fields;Altieri;Prot. Ecol.,1981
3. A review of insect prevalence in maize (Zea mays L.) and bean (Phaseoles vulgaris L.) polycultural systems;Altieri;Field Crop Res.,1978
4. Insects outbreaks;Barbosa,1987
5. Blackman, R.L. 1974. Aphids. Ginn, London.