Web of Science (Clarivate Analytics)

There are 962 citations for articles published in the journal PP as of June 2018, which increase by 66% compared to 580 citations as of June 2017.

Please click the following link to see the screenshot.

Google Scholar

There are 2657 citations for articles published in PP journal as of December 2018 based on the statistics from Google Scholar.

The 2-year Google-based Journal Impact Factor (2-GJIF) is 0.68.

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: