[1] XQuery 3.1: An XML Query Language (3/20/2017, 12:23:33 AM) https://www.w3.org/TR/2017/REC-xquery-31-20170321/#id-static-decimal-format-exponent-separator
[2] XML Path Language (XPath) 3.1 (3/20/2017, 12:18:04 AM) https://www.w3.org/TR/2017/REC-xpath-31-20170321/#id-static-decimal-format-exponent-separator
[3] Musa
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