Scimago Journal & Country Rank


Country Germany  - SIR icon SIR Ranking of Germany
H Index
Subject Area and CategoryMathematics
Computational Mathematics
Discrete Mathematics and Combinatorics
PublisherSpringer Verlag
Publication typeJournals
ISSN02099683, 14396912
Scope Combinatorica is an international journal of the János Bolyai Mathematical Society. It publishes research papers on a variety of areas of combinatorics and the theory of computing, with particular emphasis on general techniques and unifying principles. Coverage in Combinatorica includes: - combinatorial structures (graphs, hypergraphs, matroids, designs, permutation groups) - combinatorial optimization - combinatorial aspects of geometry and number theory - algorithms in combinatorics and related fields - computational complexity theory - randomization and explicit construction in combinatorics and algorithms.


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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.

Computational Mathematics1999Q2
Computational Mathematics2000Q2
Computational Mathematics2001Q1
Computational Mathematics2002Q1
Computational Mathematics2003Q2
Computational Mathematics2004Q2
Computational Mathematics2005Q2
Computational Mathematics2006Q1
Computational Mathematics2007Q1
Computational Mathematics2008Q1
Computational Mathematics2009Q1
Computational Mathematics2010Q1
Computational Mathematics2011Q1
Computational Mathematics2012Q1
Computational Mathematics2013Q1
Computational Mathematics2014Q1
Computational Mathematics2015Q1
Computational Mathematics2016Q1
Computational Mathematics2017Q1
Computational Mathematics2018Q1
Discrete Mathematics and Combinatorics1999Q1
Discrete Mathematics and Combinatorics2000Q2
Discrete Mathematics and Combinatorics2001Q1
Discrete Mathematics and Combinatorics2002Q1
Discrete Mathematics and Combinatorics2003Q2
Discrete Mathematics and Combinatorics2004Q2
Discrete Mathematics and Combinatorics2005Q2
Discrete Mathematics and Combinatorics2006Q1
Discrete Mathematics and Combinatorics2007Q1
Discrete Mathematics and Combinatorics2008Q1
Discrete Mathematics and Combinatorics2009Q1
Discrete Mathematics and Combinatorics2010Q1
Discrete Mathematics and Combinatorics2011Q1
Discrete Mathematics and Combinatorics2012Q1
Discrete Mathematics and Combinatorics2013Q1
Discrete Mathematics and Combinatorics2014Q1
Discrete Mathematics and Combinatorics2015Q1
Discrete Mathematics and Combinatorics2016Q1
Discrete Mathematics and Combinatorics2017Q1
Discrete Mathematics and Combinatorics2018Q1

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)19990.487
Cites / Doc. (4 years)20000.699
Cites / Doc. (4 years)20010.786
Cites / Doc. (4 years)20021.000
Cites / Doc. (4 years)20030.846
Cites / Doc. (4 years)20040.723
Cites / Doc. (4 years)20050.909
Cites / Doc. (4 years)20060.813
Cites / Doc. (4 years)20070.897
Cites / Doc. (4 years)20081.025
Cites / Doc. (4 years)20091.066
Cites / Doc. (4 years)20101.342
Cites / Doc. (4 years)20111.260
Cites / Doc. (4 years)20121.155
Cites / Doc. (4 years)20131.021
Cites / Doc. (4 years)20140.965
Cites / Doc. (4 years)20151.204
Cites / Doc. (4 years)20161.221
Cites / Doc. (4 years)20171.398
Cites / Doc. (4 years)20181.425
Cites / Doc. (3 years)19990.487
Cites / Doc. (3 years)20000.856
Cites / Doc. (3 years)20010.760
Cites / Doc. (3 years)20021.139
Cites / Doc. (3 years)20030.686
Cites / Doc. (3 years)20040.545
Cites / Doc. (3 years)20050.800
Cites / Doc. (3 years)20060.922
Cites / Doc. (3 years)20070.902
Cites / Doc. (3 years)20080.798
Cites / Doc. (3 years)20091.016
Cites / Doc. (3 years)20101.348
Cites / Doc. (3 years)20111.081
Cites / Doc. (3 years)20120.981
Cites / Doc. (3 years)20130.973
Cites / Doc. (3 years)20140.934
Cites / Doc. (3 years)20151.270
Cites / Doc. (3 years)20161.095
Cites / Doc. (3 years)20171.516
Cites / Doc. (3 years)20181.311
Cites / Doc. (2 years)19990.466
Cites / Doc. (2 years)20000.735
Cites / Doc. (2 years)20010.836
Cites / Doc. (2 years)20020.971
Cites / Doc. (2 years)20030.522
Cites / Doc. (2 years)20040.343
Cites / Doc. (2 years)20050.965
Cites / Doc. (2 years)20061.000
Cites / Doc. (2 years)20070.600
Cites / Doc. (2 years)20080.899
Cites / Doc. (2 years)20090.902
Cites / Doc. (2 years)20101.082
Cites / Doc. (2 years)20110.897
Cites / Doc. (2 years)20120.840
Cites / Doc. (2 years)20130.986
Cites / Doc. (2 years)20140.913
Cites / Doc. (2 years)20150.938
Cites / Doc. (2 years)20161.242
Cites / Doc. (2 years)20171.359
Cites / Doc. (2 years)20181.165
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 Cites19998
Self Cites20008
Self Cites20019
Self Cites20021
Self Cites20031
Self Cites20043
Self Cites20051
Self Cites20065
Self Cites20076
Self Cites20089
Self Cites20096
Self Cites20109
Self Cites20117
Self Cites20124
Self Cites20133
Self Cites20143
Self Cites20152
Self Cites20163
Self Cites20173
Self Cites20188
Total Cites199956
Total Cites200089
Total Cites200179
Total Cites2002115
Total Cites200372
Total Cites200455
Total Cites200596
Total Cites2006106
Total Cites2007111
Total Cites200887
Total Cites2009124
Total Cites2010151
Total Cites2011120
Total Cites2012103
Total Cites2013108
Total Cites201499
Total Cites2015127
Total Cites2016104
Total Cites2017144
Total Cites2018160
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 document19990.417
External Cites per document20000.779
External Cites per document20010.673
External Cites per document20021.129
External Cites per document20030.676
External Cites per document20040.515
External Cites per document20050.792
External Cites per document20060.878
External Cites per document20070.854
External Cites per document20080.716
External Cites per document20090.967
External Cites per document20101.268
External Cites per document20111.018
External Cites per document20120.943
External Cites per document20130.946
External Cites per document20140.906
External Cites per document20151.250
External Cites per document20161.063
External Cites per document20171.484
External Cites per document20181.246
Cites per document19990.487
Cites per document20000.856
Cites per document20010.760
Cites per document20021.139
Cites per document20030.686
Cites per document20040.545
Cites per document20050.800
Cites per document20060.922
Cites per document20070.902
Cites per document20080.798
Cites per document20091.016
Cites per document20101.348
Cites per document20111.081
Cites per document20120.981
Cites per document20130.973
Cites per document20140.934
Cites per document20151.270
Cites per document20161.095
Cites per document20171.516
Cites per document20181.311
% 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 documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20020
Non-citable documents20030
Non-citable documents20041
Non-citable documents20051
Non-citable documents20061
Non-citable documents20070
Non-citable documents20081
Non-citable documents20092
Non-citable documents20103
Non-citable documents20112
Non-citable documents20122
Non-citable documents20131
Non-citable documents20141
Non-citable documents20151
Non-citable documents20161
Non-citable documents20171
Non-citable documents20182
Citable documents1999115
Citable documents2000104
Citable documents2001104
Citable documents2002101
Citable documents2003105
Citable documents2004101
Citable documents2005120
Citable documents2006115
Citable documents2007123
Citable documents2008109
Citable documents2009122
Citable documents2010112
Citable documents2011111
Citable documents2012105
Citable documents2013111
Citable documents2014106
Citable documents2015100
Citable documents201695
Citable documents201795
Citable documents2018122
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 documents199979
Uncited documents200055
Uncited documents200160
Uncited documents200254
Uncited documents200370
Uncited documents200472
Uncited documents200577
Uncited documents200668
Uncited documents200776
Uncited documents200863
Uncited documents200965
Uncited documents201051
Uncited documents201156
Uncited documents201257
Uncited documents201349
Uncited documents201457
Uncited documents201544
Uncited documents201650
Uncited documents201740
Uncited documents201849
Cited documents199936
Cited documents200049
Cited documents200144
Cited documents200247
Cited documents200335
Cited documents200430
Cited documents200544
Cited documents200648
Cited documents200747
Cited documents200847
Cited documents200959
Cited documents201064
Cited documents201157
Cited documents201250
Cited documents201363
Cited documents201450
Cited documents201557
Cited documents201646
Cited documents201756
Cited documents201875
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The users of Scimago Journal & Country Rank have the possibility to dialogue through comments linked to a specific journal. The purpose is to have a forum in which general doubts about the processes of publication in the journal, experiences and other issues derived from the publication of papers are resolved. For topics on particular articles, maintain the dialogue through the usual channels with your editor.

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