H. Bourdoucen and  A. Al Naamany and  A. Al Kalbani,  Impact of Implementing VPN to Secure Wireless LAN.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2009, vol. 27(3). 502 - 507
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9220.