L.H, Gam, and Aishah Latiff. “Tandem Mass Spectrometric Analysis of Glycopeptides Derived from the Tryptic Digestion of Human Chorionic Gonadotropin (hCG)”. Malaysian Journal of Science 25, no. 2 (August 31, 2006): 87–95. Accessed January 8, 2025. http://borneojournal.um.edu.my/index.php/MJS/article/view/8129.