1. Problems with laboratory assay;Graham,1980
2. The relationship between semen evaluation methods and fertility in the bull;Linford;J. Reprod. Fertil.,1976
3. Evaluation of six assays of semen quality by means of their accuracy, precision and sensitivity in separating known induced levels of damage;Deibel,1976
4. Spectrophotometric quantitation of mammalian spermatozoan motility;Atherton;Human Biol. Reprod.,1978
5. A photographic method of measuring percentage of progressively motile sperm cells using dark-field microscopy;Elliot,1973