1. Akhtar, M., 1966. Studies on the nutrition and feeding of the larvae of Large White Butterfly, Pieris brassicae (L.). Ph.D. thesis. University of Bangor, U.K.
2. Allen, M.D., 1954. The effect of plant mineral nutrition on leaf-eating insects. M.Sc. thesis. University of London (Wye College).
3. Allen, M.D. & Selman, I.W., 1957. The response of the Large White Butterfly (Pieris brassicae L.) to diets of mineral deficient leaves. Bull. ent. Res. 48: 229–242.
4. Butterworth, J.H. & Morgan, E.D., 1971. Investigation of the locust feeding inhibition of seeds of the Neem Tree, Azadirachta indica. J. Insect Physiol. 17: 969–977.
5. Chapman, R.F., 1974. Feeding in Leaf-eating Insects. Oxford Biology Readers.