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[rdf11] Richard Cyganiak, David Wood, Markus Lanthaler. RDF 1.1 Concepts and Abstract Syntax. W3C Recommendation, 25 February 2014. URL: http://www.w3.org/TR/rdf11-concepts/

[turtle] Eric Prud’hommeaux, Gavin Carothers. RDF 1.1 Turtle: Terse RDF Triple Language. W3C Recommendation, 25 February 2014. URL: http://www.w3.org/TR/turtle/

[shacl] Holger Knublauch, Dimitris Kontokostas. Shapes Constraint Language (SHACL). W3C Recommendation, 20 July 2017. URL: https://www.w3.org/TR/shacl/

[owl2] Pascal Hitzler, Markus Krötzsch, Bijan Parsia, Peter F. Patel-Schneider, Sebastian Rudolph. OWL 2 Web Ontology Language Primer (Second Edition). W3C Recommendation, 11 December 2012. URL: https://www.w3.org/TR/owl2-primer/

[sparql] Steve Harris, Andy Seaborne. SPARQL 1.1 Query Language. W3C Recommendation, 21 March 2013. URL: https://www.w3.org/TR/sparql11-query/

[curie] Mark Birbeck, Shane McCarron. CURIE Syntax 1.0. W3C Working Group Note, 16 December 2010. URL: https://www.w3.org/TR/curie/

[xmlns] Tim Bray, Dave Hollander, Andrew Layman, Richard Tobin, Henry S. Thompson. Namespaces in XML 1.0 (Third Edition). W3C Recommendation, 8 December 2009. URL: https://www.w3.org/TR/xml-names/

[xmlschema11-2] David Peterson, Sandy Gao, Ashok Malhotra, Michael Sperberg-McQueen, Henry Thompson, Paul V. Biron et al. W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes. W3C Recommendation, 5 April 2012. URL: http://www.w3.org/TR/xmlschema11-2/

[xpath-functions] Michael Kay. XPath and XQuery Functions and Operators 3.1. W3C Recommendation, 21 March 2017. URL: https://www.w3.org/TR/xpath-functions-3/#regex-syntax

[bcp47] A. Phillips, M. Davis. Best Common Practice 47 — Tags for Identifying Languages. September 2009. URL: http://www.rfc-editor.org/rfc/bcp/bcp47.txt

[iso639] International Organization for Standardization. ISO 639 Language codes. URL: https://www.iso.org/iso-639-language-codes.html

[rfc2141] R. Moats. RFC 2141 — Uniform Resource Names (URNs). URL: https://www.ietf.org/rfc/rfc2141.txt

[rfc3061] M. Mealling. RFC 3061 — A URN Namespace of Object Identifiers. URL: https://www.ietf.org/rfc/rfc3061.txt

[rfc2046] N. Freed, N. Borenstein. RFC 2046 — Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types. URL: https://www.ietf.org/rfc/rfc2046.txt

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