CITATION description

## Description

CITATION defines one citation. Each citation can hold one or more references to the bibliographic data.

## Example

    <CITATIONLIST>
    <CITATION>
    <XREF>IDNAKANE2002</XREF>
    </CITATION>
    <CITATION>
    <XREF ENDTERM="IM0">IDNAKANE2002</XREF>
    <XREF>IDNAKANE2002</XREF>
    <XREF>IDCERWINKA2002</XREF>
    <XREF>IDMIZUSAWA2002</XREF>
    </CITATION>
    <XREF>1</XREF>
    </CITATION>
    </CITATIONLIST>