J. Jenefa and  E. A. Mary Anita,  A Signature-Based Secure Authentication Framework for Vehicular Ad Hoc Networks.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 110(2). 403 - 408
    [viewed 12 July 2020]. Available from: https://publications.waset.org/pdf/10004180.