@misc{1127951, author = {Vincent C Hu and David F Ferraiolo and D Richard Kuhn}, title = {Attribute considerations for access control systems:}, year = {2019}, month = {2019-06-01 04:06:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.SP.800-205}, language = {en}, }