Smale, L., Cassone, V. M., Moore, R. Y., & Morin, L. P. (1989). Paraventricular nucleus projections mediating pineal melatonin and gonadal responses to photoperiod in the hamster. Brain Research Bulletin, 22(2), 263-9. https://doi.org/10.1016/0361-9230(89)90052-x