Scimago Journal & Country Rank

Scientific Reportsopen access


United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category


Nature Publishing Group



Publication type








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The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.


The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)20110.000
Cites / Doc. (4 years)20123.111
Cites / Doc. (4 years)20135.158
Cites / Doc. (4 years)20146.036
Cites / Doc. (4 years)20156.238
Cites / Doc. (4 years)20165.373
Cites / Doc. (4 years)20174.981
Cites / Doc. (4 years)20184.688
Cites / Doc. (4 years)20194.729
Cites / Doc. (3 years)20110.000
Cites / Doc. (3 years)20123.111
Cites / Doc. (3 years)20135.158
Cites / Doc. (3 years)20146.036
Cites / Doc. (3 years)20156.208
Cites / Doc. (3 years)20165.214
Cites / Doc. (3 years)20174.783
Cites / Doc. (3 years)20184.565
Cites / Doc. (3 years)20194.558
Cites / Doc. (2 years)20110.000
Cites / Doc. (2 years)20123.111
Cites / Doc. (2 years)20135.158
Cites / Doc. (2 years)20145.990
Cites / Doc. (2 years)20155.890
Cites / Doc. (2 years)20164.738
Cites / Doc. (2 years)20174.543
Cites / Doc. (2 years)20184.239
Cites / Doc. (2 years)20194.149
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites20110
Self Cites201231
Self Cites2013366
Self Cites20141255
Self Cites20153232
Self Cites20168414
Self Cites201713434
Self Cites201811389
Self Cites201912558
Total Cites20110
Total Cites2012616
Total Cites20135065
Total Cites201420527
Total Cites201543757
Total Cites201687276
Total Cites2017164757
Total Cites2018251411
Total Cites2019283384
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document20110
External Cites per document20122.955
External Cites per document20134.785
External Cites per document20145.667
External Cites per document20155.749
External Cites per document20164.711
External Cites per document20174.393
External Cites per document20184.358
External Cites per document20194.356
Cites per document20110.000
Cites per document20123.111
Cites per document20135.158
Cites per document20146.036
Cites per document20156.208
Cites per document20165.214
Cites per document20174.783
Cites per document20184.565
Cites per document20194.558
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents20110
Non-citable documents201210
Non-citable documents201334
Non-citable documents2014181
Non-citable documents2015318
Non-citable documents2016777
Non-citable documents20171552
Non-citable documents20182803
Non-citable documents20193412
Citable documents20110
Citable documents2012198
Citable documents2013982
Citable documents20143401
Citable documents20157049
Citable documents201616740
Citable documents201734448
Citable documents201855070
Citable documents201962173
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents20110
Uncited documents201241
Uncited documents2013134
Uncited documents2014448
Uncited documents2015832
Uncited documents20162176
Uncited documents20174611
Uncited documents20187973
Uncited documents20199591
Cited documents20110
Cited documents2012167
Cited documents2013882
Cited documents20143134
Cited documents20156535
Cited documents201615341
Cited documents201731389
Cited documents201849900
Cited documents201955994
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