1. Basic physiology of follicular maturation in the pig;Foxcroft,1985
2. Hypothalamic control of gonadotrophin and prolactin secretion in pigs;Kraeling,1990
3. Central nervous system peptide and amino acid modulation of luteinizing hormone and prolactin secretion in the pig;Kraeling;J Physiol Pharmacol,1992
4. Expression of oestrus and timing of ovulation in pigs;Soede,1997
5. Administration of P.G. 600 to sows at weaning and the time of ovulation as determined by transrectal ultrasound;Knox;J Anim Sci,2001