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@inproceedings{Sandhu95b, title = {Roles versus groups}, author = {Ravi S. Sandhu}, year = {1995}, doi = {10.1145/270152.270163}, url = {http://doi.acm.org/10.1145/270152.270163}, researchr = {https://researchr.org/publication/Sandhu95b}, cites = {0}, citedby = {0}, booktitle = {ACM Workshop on Role-Based Access Control}, }