Kankeyanathan Kannan,  On the Invariant Uniform Roe Algebra as Crossed Product.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 1049 - 1054
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/1826.