[Fleur] Alain Couthures, Fleur, https://github.com/AlainCouthures/xphoneforms/blob/master/build/js/fleur.js

[XQuery] Robie, Jonathan, Michael Dyck, (eds.), XQuery 3.1: An XML Query Language, W3C, 2017, http://www.w3.org/TR/xquery-31/

[XPath functions] Michael Kay, (ed.), XPath and XQuery functions and operators 3.1, W3C, 2017, https://www.w3.org/TR/xpath-functions-31/

[xquf] Snelson, John and Jim Melton, (eds.), XQuery Update Facility 3.0, W3C, 2015, http://www.w3.org/TR/xquery-update-30/

[XF11] John M. Boyer, (ed.), XForms 1.1, W3C, 2009, https://www.w3.org/TR/2009/REC-xforms-20091020/

[XF2] E. Bruchez, et al., (eds.), XForms 2.0, W3C, 2018, https://www.w3.org/community/xformsusers/wiki/XForms_2.0

[Pemberton 2013] Pemberton, Steven. “Invisible XML.” Presented at Balisage: The Markup Conference 2013, Montréal, Canada, August 6 - 9, 2013. In Proceedings of Balisage: The Markup Conference 2013. Balisage Series on Markup Technologies, vol. 10 (2013). doi:doi:10.4242/BalisageVol10.Pemberton01.

[BaseX] BaseX - an open source XML database. Homepage. http://basex.org

[OFX] Open Financial Exchange. Downloads. http://www.ofx.net/downloads.html

[ODK] Open Data Kit. XLSForm Online. https://opendatakit.org/xlsform/