The DOI (Digital object identifier) can be found on the online version of the paper on the publisher's website
or by using CrossRef's free DOI lookup service.
Share: a fractional count allocated to an institution or country/territory for an article that takes into account the percentage of authors from that institution or country/territory and the number of affiliated institutions that contributed to the article.
Count: a Count of one is assigned to an institution or country/territory if one or more authors of the research article are from that institution or country/territory, regardless of how many co-authors there are from outside that institution or country/region.
Country/territory
2017
2018
2019
2020
2021
2022
Present
United States of America (USA)
19999.79
20419.05
20178.77
20627.93
19851.48
21473.22
19765.43
Compare the research output of up to 10 different countries/territories.
