Mohd Yusuf, Shahrul Azmi, Nor Idayu Mahat, Fadzilah Siraj, and Sazali Yaacob. 2012. “NOISE ROBUSTNESS OF FIRST FORMANT BANDWIDTH (F1BW) FEATURES IN MALAY VOWEL RECOGNITION”. Journal of Information and Communication Technology 11 (April):147-62. https://e-journal.uum.edu.my/index.php/jict/article/view/8129.