Container element for metadata about the journal in which the article was published.
The following, in order:
<journal-id> Journal Identifier, zero or more
<journal-title-group> Journal Title Group, zero or more
Any combination of:
<issn-l> ISSN-L (Linking ISSN), zero or one
<publisher> Publisher, zero or one
<self-uri> URI for This Same Article Online, zero or more
<custom-meta-group> Custom Metadata Group, zero or one