Önder Çelik, Şeyma Hasçalık, Çağatay Önal, M. Tamser, H. M. Karakaş, and Z. Güzel, “Melatonin administration prevents the disruptive effects of traumatic brain injury in ovariectomized rat brain”, J Nervous Sys Surgery, vol. 1, no. 2, pp. 101–106, Jun. 2008.