Web of Science (Clarivate Analytics)

There are 1260 citations for articles published in the journal PP as of June 2019, which increase by 31% compared to 962 citations as of June 2018.

Please click the following link to see the screenshot.

Google Scholar

There are 3407 citations for articles published in PP journal as of September 2019 based on the statistics from Google Scholar.

The 2-year Google-based Journal Impact Factor (2-GJIF) is 0.81.

CABI databases

PP is indexed by CABI, which is one of the 9 databases in the "Web of Science".

Please check the screenshot from Harvard University Library.

PP has been indexed by several world class databases. For more information, please access the following links: