3.3.3 Mixed-up title and source fields
Some references contain mixed-up fields as illustrated in the second reference below:
This is caused by garbled information returned by Google Scholar, presumably because its sources were inaccurate or difficult to parse automatically by Google's web crawler.
The effect on the citation analysis is similar to having duplicates (see below), because some works end up as separate entries instead of being included with the correct title. Since Version 3.0 of Publish or Perish duplicates can be merged into the master record. See Section 2.1.3 for further details.