http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Maintaining and using key history on personal identity verification (PIV) cards
National Institute of Standards and Technology (U.S.)
Title from PDF title screen (viewed Sept. 26, 2012).
Includes bibliographical references (page 10).
Public key infrastructure (Computer security)