<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">online reference services</topic></authority><related type="other"><topic>information retrieval services</topic></related><related type="broader"><topic>reference services</topic></related><variant type="other"><topic>on-line reference services</topic></variant><variant type="other"><topic>online reference service</topic></variant><variant type="other"><topic>reference services, online</topic></variant><variant type="other"><topic>services, online reference</topic></variant> <note xml:lang="en"><![CDATA[ Automated reference services which provide direct answers to users' queries, or provide direct access to electronically stored databases containing the needed information. For automated information services which provide data either directly or in the form of citations to data sources, use "information retrieval services." ]]></note></mads>