Citation Rankings
Highly Cited Researchers
Africa Natural Sciences / Mathematical Sciences Highly Cited Researchers Citation Rankings 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.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Relativity
cosmology
complexity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,669
13,174
0.265
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Nanocomposites
Mechanics of Nano-structures
Composite structures
Applied Mathematics
Plates and Shells
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,571
31,241
0.657
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Fluid Mechanics
Thermal Science
Applied Mathematics
Modelling and Computations
BioMathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,366
18,011
0.635
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Gravitational Waves
Black Holes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,658
15,406
0.651
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Statistics
Epidemiology
Public Health
GIS
Literature
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,486
13,349
0.568
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Statistics and Probability
Data Science
Outlier Detection
Categorical Data Analysis
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,787
6,058
0.278
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Graph Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,395
9,330
0.436
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Fractional Differential Equations and Inclusions
Abstract Differential Equations and Inclusions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,528
9,469
0.485
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Applied Mathematics
Continuum Mechanics
Theory of Elasticity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,786
12,576
0.669
* Total Citation Counts Rankings
Ranking Based On Selection: 10
statistical ecology
biodiversity informatics
citizen science
moult
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,388
4,797
0.276
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Applied Mathematics
Field Theory
Nonlinear Dynamics
Fractional Calculus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,989
10,817
0.722
* Total Citation Counts Rankings
Ranking Based On Selection: 12
mathematical ecology
networks
biodiversity informatics
evolutionary dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,383
9,537
0.663
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Climate Modeling
Climate Change
Climate Information
Climate Hazards
West African Monsoon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,340
11,692
0.815
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Mathematics
Functional Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,536
9,569
0.707
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Engineering Mathematics
Fractional-order circuits and systems
memristor
chaos
and computational
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,425
8,740
0.651
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Numerical Analysis
Approximation theory
Spectral Methods
Scientific computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,855
5,512
0.429
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,321
6,595
0.535
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Fractional Differential equations
Lie Symmetry
Bio-Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,178
7,381
0.606
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Dynamical Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,957
6,859
0.574
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Mathematics - Associate Professor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,635
7,248
0.623
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Applied Mathematics
Nonlinear dynamics
Mathematical Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,359
11,026
0.971
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Fluid Mechanics
Porous Medium
Heat and Mass Transfer
Numerical/Mathematical Methods
Nanofluids
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,589
7,514
0.784
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Computational Fluid Dynamics
Boundary Layer Flows
Fluid Mechanics
Survey Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,441
8,257
0.875
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Mathematics
Mathematical Physics
Mathematical Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,411
4,369
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Fractional calculus
Applied functional analysis
Functional differential and Functional integral equations
Dynamical system
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,163
4,068
0.444
* Total Citation Counts Rankings
Rankings
10,124
28
12
Ranking Based On Selection: 1
George FR Ellis
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,669
13,174
0.265
Relativity
cosmology
complexity
* Total Citation Counts Rankings
Rankings
10,821
2
1
Ranking Based On Selection: 2
Abdelouahed Tounsi
Djillali Liabes university of Sidi Bel Abbes
Sidi Bel Abbès, Algeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,571
31,241
0.657
Nanocomposites
Mechanics of Nano-structures
Composite structures
Applied Mathematics
Plates and Shells
* Total Citation Counts Rankings
Rankings
24,447
68
7
Ranking Based On Selection: 3
OD Makinde
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,366
18,011
0.635
Fluid Mechanics
Thermal Science
Applied Mathematics
Modelling and Computations
BioMathematics
* Total Citation Counts Rankings
Rankings
32,025
99
3
Ranking Based On Selection: 4
Denis Pollney
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,658
15,406
0.651
Gravitational Waves
Black Holes
* Total Citation Counts Rankings
Rankings
32,358
1
1
Ranking Based On Selection: 5
Osman Sankoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,486
13,349
0.568
Statistics
Epidemiology
Public Health
GIS
Literature
* Total Citation Counts Rankings
Rankings
35,945
43
4
Ranking Based On Selection: 6
Ali S Hadi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,787
6,058
0.278
Statistics and Probability
Data Science
Outlier Detection
Categorical Data Analysis
Artificial Intelligence
* Total Citation Counts Rankings
Rankings
36,877
111
7
Ranking Based On Selection: 7
Michael A. Henning
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,395
9,330
0.436
* Total Citation Counts Rankings
Rankings
41,904
5
2
Ranking Based On Selection: 8
Mouffak Benchohra
Djillali Liabes university of Sidi Bel Abbes
Sidi Bel Abbès, Algeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,528
9,469
0.485
Fractional Differential Equations and Inclusions
Abstract Differential Equations and Inclusions
* Total Citation Counts Rankings
Rankings
44,102
53
2
Ranking Based On Selection: 9
Ashraf M Zenkour
Kafr El Sheikh University
Kafr el-Sheikh, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,786
12,576
0.669
Applied Mathematics
Continuum Mechanics
Theory of Elasticity
* Total Citation Counts Rankings
Rankings
49,111
157
33
Ranking Based On Selection: 10
Leslie Gordon Underhill
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,388
4,797
0.276
statistical ecology
biodiversity informatics
citizen science
moult
* Total Citation Counts Rankings
Rankings
59,866
69
5
Ranking Based On Selection: 11
E. Ahmed
Mansoura University
Mansoura, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,989
10,817
0.722
Applied Mathematics
Field Theory
Nonlinear Dynamics
Fractional Calculus
* Total Citation Counts Rankings
Rankings
63,126
215
34
Ranking Based On Selection: 12
Cang Hui
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,383
9,537
0.663
mathematical ecology
networks
biodiversity informatics
evolutionary dynamics
* Total Citation Counts Rankings
Rankings
63,357
1
1
Ranking Based On Selection: 13
Mouhamadou Bamba Sylla
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,340
11,692
0.815
Climate Modeling
Climate Change
Climate Information
Climate Hazards
West African Monsoon
* Total Citation Counts Rankings
Rankings
68,357
85
6
Ranking Based On Selection: 14
Sayed Attia Ahmed Sayed
Assiut University
Asyut, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,536
9,569
0.707
Mathematics
Functional Analysis
* Total Citation Counts Rankings
Rankings
69,034
87
1
Ranking Based On Selection: 15
Ahmed G Radwan
Nile University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,425
8,740
0.651
Engineering Mathematics
Fractional-order circuits and systems
memristor
chaos
and computational
* Total Citation Counts Rankings
Rankings
72,963
96
2
Ranking Based On Selection: 16
Ali H Bhrawy
Beni Suef University
Beni-Suef, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,855
5,512
0.429
Numerical Analysis
Approximation theory
Spectral Methods
Scientific computing
* Total Citation Counts Rankings
Rankings
76,825
33
4
Ranking Based On Selection: 17
Hanaa Hachimi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,321
6,595
0.535
* Total Citation Counts Rankings
Rankings
77,924
265
5
Ranking Based On Selection: 18
Hossein Jafari
University of South Africa
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,178
7,381
0.606
Fractional Differential equations
Lie Symmetry
Bio-Mathematics
* Total Citation Counts Rankings
Rankings
79,694
105
8
Ranking Based On Selection: 19
Mansour E Ahmed
Assiut University
Asyut, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,957
6,859
0.574
* Total Citation Counts Rankings
Rankings
82,426
6
1
Ranking Based On Selection: 20
Hassen Aydi
Université de Sousse
Sousse, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,635
7,248
0.623
Mathematics - Associate Professor
* Total Citation Counts Rankings
Rankings
84,814
116
23
Ranking Based On Selection: 21
MS Osman
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,359
11,026
0.971
Applied Mathematics
Nonlinear dynamics
Mathematical Physics
* Total Citation Counts Rankings
Rankings
103,292
143
2
Ranking Based On Selection: 22
Ahmed M Rashad
Aswan University
Aswan, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,589
7,514
0.784
Fluid Mechanics
Porous Medium
Heat and Mass Transfer
Numerical/Mathematical Methods
Nanofluids
* Total Citation Counts Rankings
Rankings
105,134
48
2
Ranking Based On Selection: 23
Isaac Lare Animasaun
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,441
8,257
0.875
Computational Fluid Dynamics
Boundary Layer Flows
Fluid Mechanics
Survey Research
* Total Citation Counts Rankings
Rankings
105,524
377
4
Ranking Based On Selection: 24
S Moyo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,411
4,369
0.464
Mathematics
Mathematical Physics
Mathematical Sciences
* Total Citation Counts Rankings
Rankings
108,830
154
12
Ranking Based On Selection: 25
Ahmed MA El Sayed
Alexandria University
Alexandria, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,163
4,068
0.444
Fractional calculus
Applied functional analysis
Functional differential and Functional integral equations
Dynamical system