1. A study of the vaginal electrical resistance in cattle as related to hormone changes and its application in the detection of oestrus;Aboul-Ela;Ph.D. thesis, University of Aberdeen,1980
2. Relationships between intra-vaginal electrical resistance, cervico-vaginal mucus characteristics and blood progesterone and LH;Aboul-Ela;Anim. Reprod. Sci.,1983
3. Performance specification for infra-red milk analysis;Biggs;J. Assoc. Off. Anal. Chem.,1979
4. Effect of heat on butterfat percentage and milk yield;Copeland;J. Dairy Sci,1929
5. Cell density and extracellular fluid volume of bovine vulvar tissue in estrus and diestrus;Ezor,1985