H. Mohamed, N. Omar, and M. J. A. Aziz, “The Effectiveness of Using Malay Affixes for Handling Unknown Words In Unsupervised HMM POS Tagger”, IJET, vol. 7, no. 4.29, pp. 9–12, Nov. 2018, doi: 10.14419/ijet.v7i4.29.21834.