1. Evans, D.A. and Sharp, W.R. 1983. Science 221:949–951.
2. See, for example, US Patent No. 5,066,830.
3. See, for example, US Patent No. 5,840,851.
4. See, for example, Breeding Vegetable Crops (Bassett, M.J., ed.) AVI Publishing Co., Westport, CT, and US Patent No. 5,844,118 (reviews corn breeding methods).
5. Moffat, A.S. 1998. Science 282:2176–2178.