Muhammad Naveed and  Muhammad Khalid Abdullah and  Khalid Rashid and  Hafiz Farooq Ahmad,  Representing Shared Join Points with State Charts: A High Level Design Approach.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2008, vol. 15(3). 828 - 832
    [viewed 17 January 2022]. Available from: https://publications.waset.org/pdf/5128.