Armstrong, M. C. (1960). Paradontal disease of sheep in South Canterbury. New Zealand Journal of Agriculture 100, 429, 431.
Benzie, D. & Cresswell, E. (1962). Studies of the dentition of sheep. II. Radiographic illustrations of stages in the development and shedding of the permanent dentition of the Scottish Blackface sheep. Research in Veterinary Science 3, 231–235.
Boyde, A. (1972). Scanning electron microscope studies of bone. In The Biochemistry and Physiology of Bone, vol. 1. Structure, 2nd edn. (ed. Bourne, G. H.). New York: Academic Press.
Cresswell, E. & Benzie, D. (1964). Studies on the dentition of sheep. V. A comparison between the incisor dentition of ewes fed whole turnips and of ewes fed hay and silage in winter. Research in Veterinary Science 5, 488–490.
Duckworth, J., Benzie, D., Cresswell, E., Hill, R., Daigarno, A. C, Robinson, J. F. & Robson, H. W. (1961). Dental mal-occlusion and rickets in sheep. Research in Veterinary Science 2, 375–380.
Duckworth, J., Hill, R., Benzie, D., Dalgarno, A. C. & Robinson, J. F. (1962). Studies of the dentition of sheep. I. Clinical observations from investigations into the shedding ofpermanent incisor teeth byhill sheep. Research in Veterinary Science 3, 1–17.
Gunn, R.G. (1970). A note on the effect of broken mouth onthe performance of Scottish Blackface hill ewes. Animal Production 12, 517–520.
Herrtage, M. E., Saunders, R. W. & Terlecki, S. (1974). Physical examination of cull ewes at point of slaughter. Veterinary Record 95, 257–260.
Mackinnon, M. M. (1959). A pathological study ofan enzootic paradontal disease of mature sheep. New Zealand Veterinary Journal 7, 18–26.
Martinson, E.O. – Hamdan, M. A (1975). Calcu-lation of the polychoric estimate of correlation in contingency tables. Applied Statistics 24, 272–278.
Mcroberts, M. R., Hill, R. & Dalgarno, A. C. (1965). The effects of diets deficient in phosphorus, phos- phorus andvitamin D, or calcium, on the skeleton and teeth of the growing sheep. II. Journal of Agricultural Science, Cambridge 65, 11–14.
Miller, W. C. & Robertson, E. D. S. (1959). Practical Animal Husbandry, 7th edn. Chapter on dentition and ageing, pp. 379–421. Edinburgh: Oliver and Boyd.
Nisbet, D. I., Butler, E. J., Robertson, J. M. & Bannatyne, C. C. (1968). Osteodystrophic diseases of sheep. III.Dental mal-occlusion in young sheep, Journal ofComparative Pathology 78, 73–77.
Nisbet, D. I., Butler, E.J., Robertson, J. M. & Bannatyne, C. C. (1970). Osteodystrophic diseases of sheep. IV. Osteomalacia and osteoporosis in lactating ewes on West Scotland hill farms. Journal of Comparative Pathology 80, 535–542.
Northey, R. D., Hawley, J. G. & Suckling, G. W. (1975). The tooth topad relationship insheep – some mechanical considerations. New Zealand Journal of Agricultural Research 18, 133–138.
Porter, W. L., Scott, R.S. & Manktelow, B. W. (1970). The occurrence ofparadontal disease in sheep in relation to superphosphate topdressing, stocking rate, andother related factors. New Zealand Veterinary Journal 18, 21–27.
Shanks, P. L. & Donald, L. G. (1955). An unusual mouth condition in sheep. Veterinary Record 67, 312–313.
Shaw, I. (1979). Clinical observations on the molar dentition of sheep. Veterinary Record (inthe Press).
Sykes, A. R., Field, A. C. &Gunn, R. G. (1974). Effects of age andstate of incisor dentition on the chemical composition ofthe skeleton of sheep grazing hill pastures. Journal of Agricultural Science, Cambridge 83, 145–150.