serial 

Serial citation data:

Serial: Publication, in any medium, issued in successive 
parts, usually having numeric or chronological designations, 
and intended to be continued indefinitely. [Adapted from ISO 3297:1986] 

This describes the volume or issue as a whole and not 
a particular article within it.

Element Information

Model

sertitle , alttitle{0,1} , subname* , issue{0,1} , imprint{0,1} , pubdate{0,1} , descrip{0,1} , notes{0,1} , pubid{0,1} , vid{0,1} , ino{0,1} , doi{0,1} , issn{0,1} , isbn{0,1} , cpyrt{0,1}
Children: alttitle, cpyrt, descrip, doi, imprint, ino, isbn, issn, issue, notes, pubdate, pubid, sertitle, subname, vid

Source 

<xs:element name="serial" type="serialType">
  <xs:annotation>
    <xs:documentation>Serial citation data: Serial: Publication, in any medium, issued in successive parts, usually having numeric or chronological designations, and intended to be continued indefinitely. [Adapted from ISO 3297:1986] This describes the volume or issue as a whole and not a particular article within it.</xs:documentation>
  </xs:annotation>
</xs:element>

Sample