Arbain, Adila Firdaus, Dayang Norhayati Abang Jawawi, Wan Mohd Nasir bin Wan Kadir, and Imran Ghani. 2020. “Case Study on Non-Functional Requirement Change Impact Traceability for Agile Software Development”. International Journal on Advanced Science, Engineering and Information Technology 10 (1):34-40. https://doi.org/10.18517/ijaseit.10.1.10176.