Ola A. Younis and Said Ghoul, Systems Versioning: A Features-Based Meta-Modeling Approach. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2014, vol. 90(6). 988 - 992 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/9998563.