A block of elements defined to be used within a reference citation inside a bibliographic reference (<citation>), but that have other uses as a class.
<!ENTITY % references.class "access-date | annotation | article-title | collab | comment | conf-date | conf-loc | conf-name | day | edition | email | elocation-id | etal | ext-link | fpage | gov | isbn | issn | issue | issue-id | issue-title | lpage | month | name | object-id | page-count | page-range | patent | person-group | pub-id | publisher-loc | publisher-name | role | season | series | source | std | supplement | time-stamp | trans-source | trans-title | uri | volume | volume-id | year" >
journalpubcustom-classes.ent