Gang Liu and Huimin Song and Can Wang and Runnan Zhang and Lu Fang, An Attribute Based Access Control Model with POL Module for Dynamically Granting and Revoking Authorizations. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2017, vol. 126(6). 758 - 764 [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/10007354.