1. Peterson, J. "A Presence-based GEOPRIV Location Object Format." RFC 4119, December 2005.
2. Eastlake, D., J. Reagle, and D. Solo. "(Extensible Markup Language) XML-Signature Syntax and Processing." RFC 3275, March 2002.
3. Boyer, J. "Canonical XML Version 1.0." W3C REC REC-xml-c14n-20010315, March 2001.
4. Boyer, J., and J. Reagle. "Exclusive XML Canonicalization Version 1.0." 3d, ed., W3C REC REC-xml-exc-c14n-20020718, July 2002.