M Terzic, M., B. Stimec, M. Jevremovic, D. Plecaš, v Žižic, and M. Jovanovic. “Beta - Endorphin Level Elevation in Human Fetal and Neonatal Pancreas: A Consequence of Intrapartal Stress or the possible Existence of Pancreatic Islet Cells Autocrine Control?”. Thai Journal of Obstetrics and Gynaecology, vol. 5, no. 1, Jan. 1993, pp. 19-24, https://he02.tci-thaijo.org/index.php/tjog/article/view/257820.