Scimago Journal & Country Rank

Journal of Combinatorial Theory. Series B

Country United States  - SIR icon SIR Ranking of United States
H Index
Subject Area and CategoryComputer Science
Computational Theory and Mathematics

Discrete Mathematics and Combinatorics
Theoretical Computer Science
PublisherElsevier Inc.
Publication typeJournals
ISSN10960902, 00958956
Scope The Journal of Combinatorial Theory publishes original mathematical research dealing with theoretical and physical aspects of the study of finite and discrete structures in all branches of science. Series B is concerned primarily with graph theory and matroid theory and is a valuable tool for mathematicians and computer scientists.


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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 Theory and Mathematics1999Q1
Computational Theory and Mathematics2000Q1
Computational Theory and Mathematics2001Q1
Computational Theory and Mathematics2002Q1
Computational Theory and Mathematics2003Q1
Computational Theory and Mathematics2004Q1
Computational Theory and Mathematics2005Q1
Computational Theory and Mathematics2006Q1
Computational Theory and Mathematics2007Q1
Computational Theory and Mathematics2008Q1
Computational Theory and Mathematics2009Q1
Computational Theory and Mathematics2010Q1
Computational Theory and Mathematics2011Q1
Computational Theory and Mathematics2012Q1
Computational Theory and Mathematics2013Q1
Computational Theory and Mathematics2014Q1
Computational Theory and Mathematics2015Q1
Computational Theory and Mathematics2016Q1
Computational Theory and Mathematics2017Q1
Computational Theory and Mathematics2018Q1
Discrete Mathematics and Combinatorics1999Q1
Discrete Mathematics and Combinatorics2000Q1
Discrete Mathematics and Combinatorics2001Q1
Discrete Mathematics and Combinatorics2002Q1
Discrete Mathematics and Combinatorics2003Q1
Discrete Mathematics and Combinatorics2004Q1
Discrete Mathematics and Combinatorics2005Q1
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
Theoretical Computer Science1999Q1
Theoretical Computer Science2000Q1
Theoretical Computer Science2001Q1
Theoretical Computer Science2002Q1
Theoretical Computer Science2003Q1
Theoretical Computer Science2004Q1
Theoretical Computer Science2005Q1
Theoretical Computer Science2006Q1
Theoretical Computer Science2007Q1
Theoretical Computer Science2008Q1
Theoretical Computer Science2009Q1
Theoretical Computer Science2010Q1
Theoretical Computer Science2011Q1
Theoretical Computer Science2012Q1
Theoretical Computer Science2013Q1
Theoretical Computer Science2014Q1
Theoretical Computer Science2015Q1
Theoretical Computer Science2016Q1
Theoretical Computer Science2017Q1
Theoretical Computer Science2018Q1

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)19990.683
Cites / Doc. (4 years)20000.604
Cites / Doc. (4 years)20010.738
Cites / Doc. (4 years)20020.813
Cites / Doc. (4 years)20030.696
Cites / Doc. (4 years)20040.968
Cites / Doc. (4 years)20050.837
Cites / Doc. (4 years)20060.841
Cites / Doc. (4 years)20071.101
Cites / Doc. (4 years)20081.378
Cites / Doc. (4 years)20091.346
Cites / Doc. (4 years)20101.281
Cites / Doc. (4 years)20111.203
Cites / Doc. (4 years)20121.323
Cites / Doc. (4 years)20131.250
Cites / Doc. (4 years)20141.113
Cites / Doc. (4 years)20151.369
Cites / Doc. (4 years)20161.225
Cites / Doc. (4 years)20171.376
Cites / Doc. (4 years)20181.267
Cites / Doc. (3 years)19990.683
Cites / Doc. (3 years)20000.593
Cites / Doc. (3 years)20010.667
Cites / Doc. (3 years)20020.816
Cites / Doc. (3 years)20030.696
Cites / Doc. (3 years)20040.871
Cites / Doc. (3 years)20050.697
Cites / Doc. (3 years)20060.908
Cites / Doc. (3 years)20071.126
Cites / Doc. (3 years)20081.288
Cites / Doc. (3 years)20091.162
Cites / Doc. (3 years)20101.180
Cites / Doc. (3 years)20111.207
Cites / Doc. (3 years)20121.329
Cites / Doc. (3 years)20131.316
Cites / Doc. (3 years)20141.143
Cites / Doc. (3 years)20151.365
Cites / Doc. (3 years)20161.212
Cites / Doc. (3 years)20171.199
Cites / Doc. (3 years)20181.222
Cites / Doc. (2 years)19990.619
Cites / Doc. (2 years)20000.369
Cites / Doc. (2 years)20010.694
Cites / Doc. (2 years)20020.788
Cites / Doc. (2 years)20030.589
Cites / Doc. (2 years)20040.695
Cites / Doc. (2 years)20050.705
Cites / Doc. (2 years)20060.883
Cites / Doc. (2 years)20071.151
Cites / Doc. (2 years)20081.099
Cites / Doc. (2 years)20091.126
Cites / Doc. (2 years)20101.141
Cites / Doc. (2 years)20111.099
Cites / Doc. (2 years)20121.155
Cites / Doc. (2 years)20131.242
Cites / Doc. (2 years)20141.185
Cites / Doc. (2 years)20151.281
Cites / Doc. (2 years)20160.957
Cites / Doc. (2 years)20171.072
Cites / Doc. (2 years)20181.019
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 Cites199920
Self Cites200013
Self Cites200118
Self Cites200221
Self Cites200316
Self Cites200429
Self Cites200517
Self Cites200616
Self Cites200723
Self Cites200829
Self Cites200928
Self Cites201018
Self Cites201112
Self Cites201231
Self Cites201316
Self Cites201412
Self Cites201526
Self Cites201623
Self Cites201724
Self Cites201829
Total Cites1999129
Total Cites2000108
Total Cites2001118
Total Cites2002142
Total Cites2003128
Total Cites2004169
Total Cites2005136
Total Cites2006168
Total Cites2007206
Total Cites2008228
Total Cites2009230
Total Cites2010236
Total Cites2011239
Total Cites2012198
Total Cites2013204
Total Cites2014168
Total Cites2015228
Total Cites2016200
Total Cites2017223
Total Cites2018275
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 document19990.577
External Cites per document20000.522
External Cites per document20010.565
External Cites per document20020.695
External Cites per document20030.609
External Cites per document20040.722
External Cites per document20050.610
External Cites per document20060.822
External Cites per document20071.000
External Cites per document20081.124
External Cites per document20091.020
External Cites per document20101.090
External Cites per document20111.146
External Cites per document20121.121
External Cites per document20131.213
External Cites per document20141.061
External Cites per document20151.210
External Cites per document20161.073
External Cites per document20171.070
External Cites per document20181.093
Cites per document19990.683
Cites per document20000.593
Cites per document20010.667
Cites per document20020.816
Cites per document20030.696
Cites per document20040.871
Cites per document20050.697
Cites per document20060.908
Cites per document20071.126
Cites per document20081.288
Cites per document20091.162
Cites per document20101.180
Cites per document20111.207
Cites per document20121.329
Cites per document20131.316
Cites per document20141.143
Cites per document20151.365
Cites per document20161.212
Cites per document20171.199
Cites per document20181.222
% 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 documents20040
Non-citable documents20051
Non-citable documents20062
Non-citable documents20073
Non-citable documents20082
Non-citable documents20092
Non-citable documents20102
Non-citable documents20113
Non-citable documents20122
Non-citable documents20131
Non-citable documents20140
Non-citable documents20150
Non-citable documents20160
Non-citable documents20171
Non-citable documents20181
Citable documents1999189
Citable documents2000182
Citable documents2001177
Citable documents2002174
Citable documents2003184
Citable documents2004194
Citable documents2005195
Citable documents2006185
Citable documents2007183
Citable documents2008177
Citable documents2009198
Citable documents2010200
Citable documents2011198
Citable documents2012149
Citable documents2013155
Citable documents2014147
Citable documents2015167
Citable documents2016165
Citable documents2017186
Citable documents2018225
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 documents1999127
Uncited documents2000121
Uncited documents2001105
Uncited documents2002102
Uncited documents2003112
Uncited documents2004105
Uncited documents2005118
Uncited documents200698
Uncited documents200795
Uncited documents200885
Uncited documents200999
Uncited documents201092
Uncited documents201191
Uncited documents201267
Uncited documents201358
Uncited documents201472
Uncited documents201566
Uncited documents201669
Uncited documents201783
Uncited documents201892
Cited documents199962
Cited documents200061
Cited documents200172
Cited documents200272
Cited documents200372
Cited documents200489
Cited documents200578
Cited documents200689
Cited documents200791
Cited documents200894
Cited documents2009101
Cited documents2010110
Cited documents2011110
Cited documents201284
Cited documents201398
Cited documents201475
Cited documents2015101
Cited documents201696
Cited documents2017104
Cited documents2018134
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