1. Bassett, E. G., and Phillips, D. S. M., Nature, 174, 1020 (1954).
2. Bassett, E. G., and Phillips, D. S. M., N.Z. Vet. J., 3, 20 (1955).
3. Hisaw, F. L., and Zarrow, M. X., “Vitamins and Hormones”, 8, 151 (Academic Press, Inc., New York, 1950). Frieden, E. H., and Hisaw, F. L., “Recent Progress in Hormone Research”, 8, 333 (1953). Marois, M., “Controle Hormonal de la Ceinture Pelvienne et Endocrinologie Sexuelle; la problème de la relazine” (Masson et Cie., Paris, 1953).
4. Iverson, K., in “Connective Tissue in Health and Disease”, edit. by Hansen, Asboe (Bjnar Munksgaard, Copenhagen, 1954).