L. Ruzic, M. Cigrovski Berkovic, H. Starcevic, D. Lovrić, and B. R. Matković, “MALE SEX HORMONES RESPONSE AFTER A MONTH LONG HIMALAYAS TREK IN RELATION TO HEMOGLOBIN OXYGEN SATURATION”, Kinesiology, vol. 50, no. 2, pp. 157–164, Dec. 2018.