Proceedings of the National Academy of Sciences of the United States of America
11.5(top 1%)
Impact Factor
12.3(top 1%)
extended IF
950(top 1%)
H-Index
95.6K
authors
147.8K
papers
16.6M
citations
32.5K
citing journals
1.3M
citing authors
Selected Period:
The number of citations of Proceedings of the National Academy of Sciences of the United States of America per year. The percentile is given for the sake of comparison with the literature.
How are inpact factors calculated?
The impact factor (IF) is calculated by counting citations from peer-reviewed journals only.
extended IF also counts citations from books and conference papers. However, no patent, abstract, working papers, online documents, etc., are covered.
