WASET
    Hassan Haghighi,  PZ: A Z-based Formalism for Modeling Probabilistic Behavior.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 29 - 37
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/1920.