Cassone, V., Bartell, P., Earnest, B., & . (2008). Duration of melatonin regulates seasonal changes in song control nuclei of the house sparrow, Passer domesticus: independence from gonads and circadian entrainment. Journal of Biological Rhythms, 23(1), 49-58. https://doi.org/10.1177/0748730407311110

Peters, J., Earnest, B., Tjalkens, R., Cassone, V., & Zoran, M. (2005). Modulation of intercellular calcium signaling by melatonin in avian and mammalian astrocytes is brain region-specific. The Journal of Comparative Neurology, 493(3), 370-80. https://doi.org/10.1002/cne.20779 (Original work published 2005)