1Ferraiolo DF. Kunn R.Role-Based access control.ln:Proceed- ings of the 15th National Computer Security Conference.Baltimore, M D, 1992.554 N 563, http ://h issa. ncsl. n ist.gov/ku h n/.
1Ferrraiolo D F, Barkley J F,Kuhn D R. A Role Based Access Conrtrol Model and Refernence Implementation Within a Corporate Intranet [J]. ACM Transactions on Information Systems Security, 1999, (2).
