1. Testosterone;Bardin;Science,1981
2. Contact with male or female conspecificus as a reward for instrumental responses in estrus and anestrus female rats;Beck;Acta Neurobiol. Exp.,1974
3. Ethopharmacological approaches for studying the properties of psychoactive drugs;Brain;Reviews Neuros.,1992
4. Influence of sexual dimorphism on fetal and placental weights in the rat;Bruce;Nature,1975
5. Sex steroids and the growth axis;Chowen;Cell Mol. Neurobiol.,1996