[CCDFPT98] XML-GL: A Graphical Language for Querying and Reshaping XML Documents, Stefano Ceri, Sara Comai, Ernesto Damiani, Piero Fraternali, Stefano Paraboschi, e Letizia Tanca, QL'98 - The Query Languages Workshop, December 5, 1998.
[DeR98] XQuery: A unified syntax for linking and querying general XML documents, Steven DeRose, QL'98 - The Query Languages Workshop, December 5, 1998.
[Paa95] Attribute Grammars Paradigms: A High-Level Methodology in Language Implementation, Jukka Paakki, ACM Computing Serveys, 27, 2, June 1995.
[RLS98] XML Query Language (XQL), Jonathan Robie, Joe Lapp, e David Schach, QL'98 - The Query Languages Workshop, December 5, 1998.
[Tom98] Providing flexible access in a query language for XML, Frank Tompa, QL'98 - The Query Languages Workshop, December 5, 1998.
[Wad99] A formal semantics of patterns in XSLT, Philip Wadler, Markup Technologies'99, Philadelphia - USA, Dec. 1999.
[Wid8] Querying XML with Lore, Jennifer Widom, QL'98 - The Query Languages Workshop, December 5, 1998.
[xsl] "Extensible Stylesheet Language (XSL) Version 1.0" - World Wide Web Consortium Working Draft 18-August-1998;
[xslt] "XSL Transformations (XSLT) - Version 1.0" - World Wide Web Consortium Recommendation 16-November-1999;