Luo Y, Puyang T, Luo W, Shen Q, Ruan A, Wu Z. MultiPol: Towards a Multi-policy Authorization Framework for RESTful Interfaces in the Cloud, in Information and Communications Security - 18th International Conference, ICICS 2016, Singapore, November 29 - December 2, 2016, Proceedings.Vol 9977. Springer; 2016:214–226.