Naeem Muhammad and  Yves Vandewoude and  Yolande Berbers and  Robert Feldt,  Suitability of Requirements Abstraction Model (RAM) Requirements for High-Level System Testing.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2008, vol. 14(2). 267 - 273
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/11418.