Din, Jamilah, Rodziah Din, Yusmadi Yah Jusoh, and Muhammed Basheer Jasser. 2018. “Towards Employing Metrics in Measuring the Quality of Software Safety Critical Systems and Managing Their Development”. International Journal of Engineering & Technology 7 (4.31): 135-39. https://doi.org/10.14419/ijet.v7i4.31.23356.