Ahmad, Nazhatulshima, Mohd. Zambri Zainuddin, Mohd. Sahar Yahya, and Djoni N. Dawanas. “The Observations of H, Fe II and He I in Classical Be Stars”. Malaysian Journal of Science 28, no. 3 (December 24, 2009): 315–322. Accessed January 6, 2025. http://borneojournal.um.edu.my/index.php/MJS/article/view/7639.