1. Brackmann M, Hoffmann K (1977) Pinealectomy and photoperiod influence testicular development in the Djungarian hamster. Naturwissenschaften 64: 341–342
2. Carter DS, Goldman BD (1981) Antigonadal and progonadal effects of programmed melatonin infusion into juvenile Djungarian hamsters (Phodopus sungorus). Biol Reprod 24: (Suppl 1) 23A
3. Elliott JA (1974) Photoperiodic regulation of testis function in the golden hamster: Relation to the Orcadian system. Ph D thesis, Univ Texas, Austin
4. Elliott JA (1976) Orcadian rhythms and photoperiodic time measurement in mammals. Fed Proc 35: 2339–2346
5. Farner DS (1975) Photoperiodic controls in the secretion of gonadotropins in birds. Am Zool 15: (Suppl 1)117–135