1. Compact Data Structures Library (libcds),
http://libcds.recoded.cl/
2. SPARQL Query Language for RDF. W3C Recomm. (2008),
http://www.w3.org/TR/rdf-sparql-query/
3. Turtle-Terse RDF Triple Language. W3C Team Subm. (2008),
http://www.w3.org/TeamSubmission/turtle/
4. Notation3. W3C Design Issues (1998),
http://www.w3.org/DesignIssues/Notation3
5. RDF/XML Syntax. W3C Recomm. (2004),
http://www.w3.org/TR/REC-rdf-syntax/