References

“Role-Based Access Control Models”

https://csrc.nist.gov/CSRC/media/Projects/Role-Based-Access-Control/documents/sandhu96.pdf

“A Formal Model for Role-Based Access Control Using Graph Transformation” http://www.profsandhu.com/infs767/infs767fall00/lec9p.pdf

“Role-Based Access Control and the Access Control Matrix”

https://www.researchgate.net/profile/Gregory_Saunders/publication/276411813_Role-Based_Access_Control_and_the_Access_Control_Matrix/links/5559571408ae6fd2d826fb27/Role-Based-Access-Control-and-the-Access-Control-Matrix.pdf

“Graph Transformations for the Specification of Access Control Policies”

https://ac.els-cdn.com/S1571066104802056/1-s2.0-S1571066104802056-main.pdf?_tid=e0ff3488-c289-11e7-a784-00000aab0f6c&acdnat=1509928490_72372447dc6dd4e153f20c33abb322ce