R. C. Cooper

Alveolar bone loss one year following ovariectomy in sheep.

R. B. Johnson, C. Streckfus, J. Gilbert, 1997, Journal of periodontology.

Effect of estrogen deficiency on skeletal and alveolar bone density in sheep.

R. B. Johnson, C. Streckfus, D. Parsell, 2002, Journal of periodontology.

Preparation of Poliovirus Labeled with Phosphorus-33

M. Sobsey, R. C. Cooper, M. Lavigne, 1972 .

The ovariectomized sheep as a model for human bone loss.

R. B. Johnson, L. Zardiackas, J. Gilbert, 2004, Journal of comparative pathology.