I. General description
A head consists of 5 parts:
(1) Publisher information
(2) Journal information
(3) Issue information
(4) Document type
(5) Article information
II. Meaning of codes
Tags
+ = tag will be present 1 or more times
? = tag will be present 0 or 1 time
1-n = tag will be present 1 to n times
Text
... = text is always present
III. Description of head
0 + = beginning of head
1 = publisher information
... = publisher name
... = publisher location
= end publisher information
2 = journal information
... = ISSN
... = journal title
... = journal URL
= end journal information
3 = issue information
... = volume number
... = issue number
... = cover date
... = issue URL
= end issue information
4 ... = document type
5 = article information
... = title
= author group
+ = author
? ... = author's given name(s)
... = author's surname
? ... = author's name suffix, e.g., Jr. or III
+ = end author
= end author group
= page numbers
... = first page
... = last page
= end page numbers
? ... = abstract
... = link to article citation, abstract and full-text options
... = DOI (Document Object Identifier)
? ... = link to article dataset
? ... = link to article additional materials
= end article information
+ = end head