Khalid Abdelmoumen and  Mustapha Najmeddine and  Hussain Ben-Azza,  Pontrjagin Duality and Codes over Finite Commutative Rings.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2011, vol. 56(8). 1181 - 1185
    [viewed 19 January 2022]. Available from: https://publications.waset.org/pdf/4423.