^Kind, A. J.; McCreath, K. J.; Howcroft, J.; Campbell, K. H. S.; Colman, A.; Schnieke, A. E. (2000). “Production of gene-targeted sheep by nuclear transfer from cultured somatic cells”. Nature405 (6790): 1066–1069. doi:10.1038/35016604. PMID10890449.
^Polejaeva, I. A.; Chen, S. H.; Vaught, T. D.; Page, R. L.; Mullins, J.; Ball, S.; Dai, Y.; Boone, J. et al. (2000). “Cloned pigs produced by nuclear transfer from adult somatic cells”. Nature407 (6800): 86–90. doi:10.1038/35024082. PMID10993078.
^Schnieke (1997). “Human factor IX transgenic sheep produced by transfer of nuclei from transfected fetal fibroblasts.”. Science278: 2130–3. doi:10.1126/science.278.5346.2130. PMID9405350.
^Campbell, K. & Wilmut, I. (1998) "Nuclear Transfer". Animal Breeding: Technology for the 21st Century. (ed: A.J. Clark; Harwood Academic Publishers). pp. 47–62
^Campbell, K. (1998). "Cloning Dolly: Implications for Human Medicine", Fertility and Reproductive Medicine (eds: R.D. Kempers, J. Cohen, A.F. Haney, and J.B. Younger), pp. 3–11. (excerpted from Medica: International Congress, series 1183)
^Campbell, K. (1997). “Totipotency or multipotentiality of cultured cells: Applications and progress”. Theriogenology47: 63–72. doi:10.1016/S0093-691X(96)00340-8.
^Wilmut, I.; Schnieke, A. E.; McWhir, J.; Kind, A. J.; Campbell, K. H. S. (1997). “Viable offspring derived from fetal and adult mammalian cells”. Nature385 (6619): 810–813. doi:10.1038/385810a0. PMID9039911.
^Schnieke, A. E.; Kind, A. J.; Ritchie, W. A.; Mycock, K.; Scott, A. R.; Ritchie, M.; Wilmut, I.; Colman, A. et al. (1997). “Human Factor IX Transgenic Sheep Produced by Transfer of Nuclei from Transfected Fetal Fibroblasts”. Science278 (5346): 2130–2133. doi:10.1126/science.278.5346.2130. PMID9405350.