Ahmed Khudhair Abbas, Saad Qassim Fleh, and Haydar Hassan Safi. “SYSTEMATIC MAPPING STUDY ON MANAGING VARIABILITY IN SOFTWARE PRODUCT LINE ENGINEERING: Communication”. Diyala Journal of Engineering Sciences (December 1, 2015): 511–520. Accessed September 21, 2024. https://djes.info/index.php/djes/article/view/345.