Citation Rankings
Highly Cited Researchers

University of Cape Town Highly Cited Researchers CitationNatural Sciences / Mathematical Sciences Rankings (Sort by last 6 years Citation Index) 2025

The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
South Africa
George FR Ellis
Relativity
cosmology
complexity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,669
13,174
0.265
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
South Africa
Leslie Gordon Underhill
statistical ecology
biodiversity informatics
citizen science
moult
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,388
4,797
0.276
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
South Africa
Carryn De Moor
mathematical modelling
renewable resources assessment
fisheries management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,005
2,992
0.747
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
South Africa
Charalampos (Haris) Skokos|Charalampos Skokos, Haris Skokos
Nonlinear Dynamics
Dynamical Systems
Chaos
Hamiltonian Systems
Symplectic Integrators
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,964
1,892
0.381
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
South Africa
Allen Rodgers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,202
1,793
0.427
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
South Africa
Reshma Kassanjee
Statistics
Computation&Applied Mathematics
Public Health
Epidemiology
HIV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,169
1,692
0.780
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
South Africa
George Janelidze
Category theory
Algebra
Topology and Geometry
Sets and Logic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,689
1,316
0.357
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
South Africa
Jeff Murugan
String Theory
Quantum Gravity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,324
1,248
0.537
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
South Africa
Sheetal Silal
Mathematical modelling
Vaccine preventable diseases
Public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,509
1,093
0.724
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
South Africa
Julien Larena
Gravitation
general relativity
cosmologie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,983
1,000
0.504
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
South Africa
Jonathan Shock
Reinforcement learning
String theory
cognitive and computational neuroscience
medical data analysis
machine learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,125
896
0.422
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
South Africa
David Erwin
Graph Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,687
773
0.458
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
South Africa
Birgit Erni
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,178
499
0.424
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
South Africa
Elsje Scott
Teaching and learning
business and data analysis
systems analysis design and development
Applied mathematics and heuristics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
972
421
0.433
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
South Africa
Linda Haines
design of experiments
statistical modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,019
366
0.181
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
South Africa
Dorothy Nyemba
sexual and reproductive health
maternal and child health specifically HIV and STIs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
333
333
1.000
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
South Africa
Kathy Driver
Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,311
318
0.243
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
South Africa
Kate Le Roux
mathematics education
critical discourse analysis
academic literacies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
541
298
0.551
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
South Africa
Nora Alexeeva
Nonlinear Waves
Pattern Formation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
968
258
0.267
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
South Africa
Leon Malan
Numerical Methods
Computational Fluid Dynamics
Two-phase flow
Slosh Dissipation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
257
250
0.973
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
South Africa
Alexandar Yanovski
Mathematics
Mathematical Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
800
219
0.274
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
South Africa
Allan Ernest Clark
Statistics
Bayesian methods
Ecological applications
Financial applications
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
332
201
0.605
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
South Africa
Christien Thiart
Geostatistics
Spatial Modelling
GIS
Linear models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
663
194
0.293
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :24
South Africa
Francois Ebobisse
Calculus of variations
pdes and applications in continuum mechanics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
637
186
0.292
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :25
South Africa
Mhakure Duncan
mathematics education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
182
136
0.747
* Last 6 Years Citation Counts Rankings
Rankings
24,080
South Africa
90
23
Ranking Based On Selection: 1
George FR Ellis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,669
13,174
0.265
* Last 6 Years Citation Counts Rankings
Rankings
99,113
South Africa
411
82
Ranking Based On Selection: 2
Leslie Gordon Underhill
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,388
4,797
0.276
statistical ecology
biodiversity informatics
citizen science
moult
* Last 6 Years Citation Counts Rankings
Rankings
172,987
South Africa
749
161
Ranking Based On Selection: 3
Carryn De Moor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,005
2,992
0.747
mathematical modelling
renewable resources assessment
fisheries management
* Last 6 Years Citation Counts Rankings
Rankings
278,385
South Africa
1,258
259
Ranking Based On Selection: 4
Charalampos (Haris) Skokos|Charalampos Skokos, Haris Skokos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,964
1,892
0.381
Nonlinear Dynamics
Dynamical Systems
Chaos
Hamiltonian Systems
Symplectic Integrators
* Last 6 Years Citation Counts Rankings
Rankings
292,850
South Africa
1,331
272
Ranking Based On Selection: 5
Allen Rodgers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,202
1,793
0.427
* Last 6 Years Citation Counts Rankings
Rankings
309,054
South Africa
1,420
281
Ranking Based On Selection: 6
Reshma Kassanjee
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,169
1,692
0.780
Statistics
Computation&Applied Mathematics
Public Health
Epidemiology
HIV
* Last 6 Years Citation Counts Rankings
Rankings
385,350
South Africa
1,837
335
Ranking Based On Selection: 7
George Janelidze
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,689
1,316
0.357
Category theory
Algebra
Topology and Geometry
Sets and Logic
* Last 6 Years Citation Counts Rankings
Rankings
402,616
South Africa
1,919
351
Ranking Based On Selection: 8
Jeff Murugan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,324
1,248
0.537
* Last 6 Years Citation Counts Rankings
Rankings
447,071
South Africa
2,138
375
Ranking Based On Selection: 9
Sheetal Silal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,509
1,093
0.724
Mathematical modelling
Vaccine preventable diseases
Public health
* Last 6 Years Citation Counts Rankings
Rankings
477,725
South Africa
2,315
399
Ranking Based On Selection: 10
Julien Larena
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,983
1,000
0.504
* Last 6 Years Citation Counts Rankings
Rankings
516,493
South Africa
2,550
433
Ranking Based On Selection: 11
Jonathan Shock
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,125
896
0.422
Reinforcement learning
String theory
cognitive and computational neuroscience
medical data analysis
machine learning
* Last 6 Years Citation Counts Rankings
Rankings
569,628
South Africa
2,853
469
Ranking Based On Selection: 12
David Erwin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,687
773
0.458
* Last 6 Years Citation Counts Rankings
Rankings
731,091
South Africa
3,882
601
Ranking Based On Selection: 13
Birgit Erni
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,178
499
0.424
* Last 6 Years Citation Counts Rankings
Rankings
799,937
South Africa
4,338
652
Ranking Based On Selection: 14
Elsje Scott
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
972
421
0.433
Teaching and learning
business and data analysis
systems analysis design and development
Applied mathematics and heuristics
* Last 6 Years Citation Counts Rankings
Rankings
859,563
South Africa
4,761
698
Ranking Based On Selection: 15
Linda Haines
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,019
366
0.181
* Last 6 Years Citation Counts Rankings
Rankings
901,703
South Africa
5,050
720
Ranking Based On Selection: 16
Dorothy Nyemba
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
333
333
1.000
sexual and reproductive health
maternal and child health specifically HIV and STIs
* Last 6 Years Citation Counts Rankings
Rankings
920,835
South Africa
5,202
740
Ranking Based On Selection: 17
Kathy Driver
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,311
318
0.243
* Last 6 Years Citation Counts Rankings
Rankings
950,203
South Africa
5,418
759
Ranking Based On Selection: 18
Kate Le Roux
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
541
298
0.551
mathematics education
critical discourse analysis
academic literacies
* Last 6 Years Citation Counts Rankings
Rankings
1,015,146
South Africa
5,938
807
Ranking Based On Selection: 19
Nora Alexeeva
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
968
258
0.267
* Last 6 Years Citation Counts Rankings
Rankings
1,031,106
South Africa
6,088
819
Ranking Based On Selection: 20
Leon Malan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
257
250
0.973
Numerical Methods
Computational Fluid Dynamics
Two-phase flow
Slosh Dissipation
* Last 6 Years Citation Counts Rankings
Rankings
1,090,910
South Africa
6,587
872
Ranking Based On Selection: 21
Alexandar Yanovski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
800
219
0.274
* Last 6 Years Citation Counts Rankings
Rankings
1,131,334
South Africa
6,916
903
Ranking Based On Selection: 22
Allan Ernest Clark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
332
201
0.605
Statistics
Bayesian methods
Ecological applications
Financial applications
* Last 6 Years Citation Counts Rankings
Rankings
1,147,352
South Africa
7,054
917
Ranking Based On Selection: 23
Christien Thiart
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
663
194
0.293
Geostatistics
Spatial Modelling
GIS
Linear models
* Last 6 Years Citation Counts Rankings
Rankings
1,166,961
South Africa
7,205
930
Ranking Based On Selection: 24
Francois Ebobisse
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
637
186
0.292
Calculus of variations
pdes and applications in continuum mechanics
* Last 6 Years Citation Counts Rankings
Rankings
1,314,697
South Africa
8,442
1,032
Ranking Based On Selection: 25
Mhakure Duncan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
182
136
0.747