1. Beever, D. J. and Hopkirk, G. (1990). Fruit development and fruit physiology. In:Kiwifruit: Science and management. (Warrington, I. J. and Weston, G. C., Eds). New Zealand Society of Horticultural Science, Ray Richards, Publisher, Auckland, 97–126.
2. Harman, J. E. (1981). Kiwifruit maturity.The Orchardist of New Zealand (May), 126–30.
3. Harman, J. E. and Hopkirk, G. (1984). Kiwifruit testing for maturity.Aglink HPP213, Information Services, MAF, Private Bag, Wellington.
4. Hopkirk, G., Beever, D. J. and Triggs, C. M. (1986). Brix levels vary in fruit and on vines.New Zealand Kiwifruit (Feb), 30.
5. Seager, N. G. (1993).Temperature effects on kiwifruit maturation. Thesis, Massey University, Palmerston North, New Zealand.