TY  - RPRT
TI  - Digital identity guidelines: revision 3 
AU  - Grassi, Paul A
AU  - Garcia, Michael E
AU  - Fenton, James L
PY  - 2017
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST SP 800-63-3
DO  - 10.6028/NIST.SP.800-63-3
ER  -