H. El-Kamchouchi and Heba Gaber and Fatma Ahmed and Dalia H. El-Kamchouchi, An Efficient Proxy Signature Scheme Over a Secure Communications Network. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2016, vol. 115(7). 1320 - 1323 [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/10004918.