Yilmaz B, Kutlu S, Mogulkoç R, Canpolat S, Sandal S, Tarakçi B, Kelestimur H. Melatonin inhibits testosterone secretion by acting at hypothalamo-pituitary-gonadal axis in the rat.  Neuro Endocrinol Lett. 2000 Jan;  21(4): 301-306

Mogulkoç R, Dogru O, Baltaci K, Yilmaz B, Kelestimur H. Influence of hypovolemic and hypertonic treatments on plasma vasopressin levels and fluid balance in the thyroidectomy-induced hypothyroid rats.  Neuro Endocrinol Lett. 2000 Jan;  21(1): 35-38

Mogulkoç R, Baltaci A, Yilmaz B, Kelestimur H. Influence of hypovolemic and hypertonic treatments on plasma vasopressin levels and fluid balance in the propylthiouracil-induced hypothyroid rat.  Neuro Endocrinol Lett. 1999 Jan;  20(5): 311-314