Citation Rankings
Highly Cited Researchers
Highly Cited Researchers Citation 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
Health care financing. Equity and Efficiency in health care
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,116
2,272
0.552
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Human Genetics
Molecular Medicine
Chemical Pathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,818
1,583
0.871
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
biochemical paraistology
medicinal/pharmaceutical biochemistry
endogenous active compounds
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,545
1,448
0.937
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Epidemiology
Biostatistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,868
1,205
0.645
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Circular Economy/Sustainability/Supply Chain Management/Strategy Management.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
774
773
0.999
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Time Series Analysis & Forecasting
Multivariate Analysis
Statistical Distributions
Development of
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
890
720
0.809
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Mathematical Modelling
Dynamical Systems
Mathematical Biology
Fractional Calculus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
795
719
0.904
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
492
404
0.821
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Machine Learning
Information Security
Complex/Social Networks
Quantum Information Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
416
354
0.851
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Malaria
Genomics and Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
432
337
0.780
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Real Analysis
Theory of Inequalities
Special Functions
Mathematical Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
437
310
0.709
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
354
284
0.802
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Nursing
Pediatric nursing
HIV/AIDS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
277
275
0.993
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Fisheries and Aquaculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283
258
0.912
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
G.I.S. & Remote sensing
Environmental Modelling
Climatology
Environmental Impact Assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
290
251
0.866
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Mathematical Modeling
Modeling in Education
Teaching and Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
243
236
0.971
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Computer Arithmetic
Digital Logic Design
Residue Number Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
296
232
0.784
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Coputer Arithmetic
Digital Logic Design
Mathematical Modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
271
225
0.830
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Plant biotechnology
Molecular biology
Phytochemistry
Food Chemistry
Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
224
224
1.000
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Natural resources governance
community rights over natural resources
decentralisation and local development
climate change an
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
242
216
0.893
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Cancer Biology and Parasitology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
269
189
0.703
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Agronomy
Plant Genetics
Molecular Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
199
188
0.945
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Natural product/medicinal chemistry
Chemical ecology
Insecticides related human/crop/environmental protection research.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
202
185
0.916
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Clay Science
Materials Characterization
Applied Spectroscopy
clay bricks
Adobe bricks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
225
172
0.764
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Mathematical programming
Optimal Reliability Modelling
Numerical Analysis
Mathematical Analysis
Statistical Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
299
171
0.572
* Last 6 Years Citation Counts Rankings
Rankings
231,922
120
1
Ranking Based On Selection: 1
James Akazili
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,116
2,272
0.552
* Last 6 Years Citation Counts Rankings
Rankings
328,445
215
2
Ranking Based On Selection: 2
Godfred Agongo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,818
1,583
0.871
Human Genetics
Molecular Medicine
Chemical Pathology
* Last 6 Years Citation Counts Rankings
Rankings
355,482
239
3
Ranking Based On Selection: 3
Michael Adu-Frimpong
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,545
1,448
0.937
biochemical paraistology
medicinal/pharmaceutical biochemistry
endogenous active compounds
* Last 6 Years Citation Counts Rankings
Rankings
414,292
300
4
Ranking Based On Selection: 4
Paul Welaga
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,868
1,205
0.645
Epidemiology
Biostatistics
* Last 6 Years Citation Counts Rankings
Rankings
569,948
513
5
Ranking Based On Selection: 5
Daniel Faibil
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
774
773
0.999
Circular Economy/Sustainability/Supply Chain Management/Strategy Management.
* Last 6 Years Citation Counts Rankings
Rankings
595,744
558
6
Ranking Based On Selection: 6
Suleman Nasiru
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
890
720
0.809
Time Series Analysis & Forecasting
Multivariate Analysis
Statistical Distributions
Development of
* Last 6 Years Citation Counts Rankings
Rankings
596,337
561
7
Ranking Based On Selection: 7
Baba Seidu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
795
719
0.904
Mathematical Modelling
Dynamical Systems
Mathematical Biology
Fractional Calculus
* Last 6 Years Citation Counts Rankings
Rankings
817,836
970
8
Ranking Based On Selection: 8
Ampadu Boateng
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
492
404
0.821
Environmental Science
* Last 6 Years Citation Counts Rankings
Rankings
874,793
1,105
9
Ranking Based On Selection: 9
Baagyere Edward Yellakour
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
416
354
0.851
Machine Learning
Information Security
Complex/Social Networks
Quantum Information Processing
* Last 6 Years Citation Counts Rankings
Rankings
896,029
1,158
10
Ranking Based On Selection: 10
Abugri James
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
432
337
0.780
Malaria
Genomics and Biochemistry
* Last 6 Years Citation Counts Rankings
Rankings
932,815
1,256
11
Ranking Based On Selection: 11
Kwara Nantomah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
437
310
0.709
Real Analysis
Theory of Inequalities
Special Functions
Mathematical Analysis
* Last 6 Years Citation Counts Rankings
Rankings
972,455
1,363
12
Ranking Based On Selection: 12
Oladejo Nathaniel Kayode
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
354
284
0.802
* Last 6 Years Citation Counts Rankings
Rankings
987,718
1,410
13
Ranking Based On Selection: 13
Abdul Razak Doat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
277
275
0.993
Nursing
Pediatric nursing
HIV/AIDS
* Last 6 Years Citation Counts Rankings
Rankings
1,016,366
1,487
14
Ranking Based On Selection: 14
Emmanuel O. Kombat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283
258
0.912
* Last 6 Years Citation Counts Rankings
Rankings
1,028,934
1,524
15
Ranking Based On Selection: 15
Steve Ampofo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
290
251
0.866
G.I.S. & Remote sensing
Environmental Modelling
Climatology
Environmental Impact Assessment
* Last 6 Years Citation Counts Rankings
Rankings
1,057,911
1,619
16
Ranking Based On Selection: 16
Christopher Saaha Bornaa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
243
236
0.971
Mathematical Modeling
Modeling in Education
Teaching and Learning
* Last 6 Years Citation Counts Rankings
Rankings
1,065,208
1,647
17
Ranking Based On Selection: 17
Bankas Kwedzo Edem
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
296
232
0.784
Computer Arithmetic
Digital Logic Design
Residue Number Systems
* Last 6 Years Citation Counts Rankings
Rankings
1,079,509
1,680
18
Ranking Based On Selection: 18
Ibrahim Daabo Mohammed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
271
225
0.830
Coputer Arithmetic
Digital Logic Design
Mathematical Modeling
* Last 6 Years Citation Counts Rankings
Rankings
1,082,359
1,692
19
Ranking Based On Selection: 19
Thomas Attaribo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
224
224
1.000
Plant biotechnology
Molecular biology
Phytochemistry
Food Chemistry
Microbiology
* Last 6 Years Citation Counts Rankings
Rankings
1,098,497
1,739
20
Ranking Based On Selection: 20
Asaah Sumaila Mohammed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
242
216
0.893
Natural resources governance
community rights over natural resources
decentralisation and local development
climate change an
* Last 6 Years Citation Counts Rankings
Rankings
1,160,321
1,930
21
Ranking Based On Selection: 21
Kwaku Appiah-Kubi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
269
189
0.703
* Last 6 Years Citation Counts Rankings
Rankings
1,163,630
1,935
22
Ranking Based On Selection: 22
Eunice Essel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
199
188
0.945
Agronomy
Plant Genetics
Molecular Biology
* Last 6 Years Citation Counts Rankings
Rankings
1,171,054
1,955
23
Ranking Based On Selection: 23
Abagale Abah Samson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
202
185
0.916
Natural product/medicinal chemistry
Chemical ecology
Insecticides related human/crop/environmental protection research.
* Last 6 Years Citation Counts Rankings
Rankings
1,204,469
2,043
24
Ranking Based On Selection: 24
Aaron N. Adazabra|A. N. Adazabra
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
225
172
0.764
Clay Science
Materials Characterization
Applied Spectroscopy
clay bricks
Adobe bricks
* Last 6 Years Citation Counts Rankings
Rankings
1,206,630
2,047
25
Ranking Based On Selection: 25
Stephen B. Twum
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
299
171
0.572
Mathematical programming
Optimal Reliability Modelling
Numerical Analysis
Mathematical Analysis
Statistical Analysis