WASET
    Amel Grissa-Touzi and  Chadlia Jerad and  Habib Ounelli,  New Approach for Manipulation of Stratified Programs.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2007, vol. 11(11). 3574 - 3577
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/9949.