Arellano Karina and  Diego Avila-Pesántez and  Leticia Vaca-Cárdenas and  Alberto Arellano and  Carmen Mantilla,  Towards a Security Model against Denial of Service Attacks for SIP Traffic.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2018, vol. 133(1). 82 - 87
    [viewed 27 November 2021]. Available from: https://publications.waset.org/pdf/10008431.