References:

1. R.B.Church. "Embryo Manipulation and Gene Transfer in Domestic Animals." TRENDS IN BIOTECHNOLOGY, Vol.5, January (1987), pp.13-19.

2. Lawrence C. Smith. "Production of Multiple Genetically Identical Farm Animals by Nuclear Transplantation." CANADIAN VETERINARY JOURNAL, Vol.32, February (1991), pp.94-98.

3. K.R.Bondioli, M.E.Westhusin, and C.R.Looney. "Production of Identical Bovine Offspring by Nuclear Transfer." THERIOGENOLOGY, 33:1, January (1990), pp.165-174.