Jubb, T.F., Fordyce, G., Bolam, M.J., Hadden, D.J., Cooper, N.J., Whyte, T.R., Fitzpatrick, L.A., Hill, F., and D'Occhio, M.J. (2003) Trial introduction of the Willis dropped ovary technique for spaying cattle in northern Australia. Australian Veterinary Journal, 81 (1-2). pp. 66-70.

D'Occhio, Michael J., Fordyce, Geoffry, Whyte, Tim R., Jubb, Tristan F., Fitzpatrick, Lee A., Cooper, Neil J., Aspden, William J., Bolam, Matt J., and Trigg, Timothy E. (2002) Use of GnRH agonist implants for long term suppression of fertility in extensively managed heifers and cows. Animal Reproduction Science, 74 (3). pp. 151-162.

Fordyce, Geoffry, Jubb, Tristan F., Fitzpatrick, Lee A., Whyte, Tim. R, Cooper, Neil J., Bolam, Matt J., Haddon, David J., Hill, Felicity, and D'Occhio, Michael J. (2001) Contraceptive efficacy of an intra-uterine device in Brahman cattle. Animal Reproduction Science, 65 (3-4). pp. 193-204.