2.4.2 My paper/book does not appear in Publish or Perish

Publish or Perish uses Google Scholar data to calculate its citation metrics. Google Scholar's processing is automatic (unlike ISI's that involves manual handling and checking, with the associated price tag) and hence occasional errors or omissions do occur.

This may be due to:

• Papers that are not (yet) available online. This includes many older papers.
• The nature of the publication: books and other non-journal publications might not be accessible to Google Scholar.
• Publishing in journals to which Google Scholar has no access because of the journals publishers' policy.

For more information limitations of Google Scholar, see Chapter 13 which discusses the advantages and disadvantages of the different data sources for citation analyses.