Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
Food CHemistry
Organic Chemistry
Organic Spectroscopy
Hydrochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,737
962
0.554
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
Genetics and Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
729
622
0.853
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
environmental toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
630
551
0.875
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
plant physiology and molecular biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
776
510
0.657
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
Plant Pathology and Mycology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
699
483
0.691
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
Groundwater Hydrology
Wetland Geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
344
333
0.968
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
Environmental public health
antimicrobial resistance
bacterial stress response
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
304
299
0.984
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
Electrical/Environmental Attributes
Potential Field
Field Exploration
Radiometric and Data Integration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
293
287
0.980
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
virology and Molecular Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
444
254
0.572
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
Econometrics
International economics
Bilateral and multilateral trade relations
environmental impact of free trade
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
228
213
0.934
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
222
209
0.941
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
Insurance
Econometrics
Macroeconomics and Health Economics
Public Policy
Income Inequality.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
218
178
0.817
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
Development Economics
Agricultural Economics
Econometrics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
192
157
0.818
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
Natural Hazard Vulnerability Assessment
GIS and Hydrodynamic Modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
159
154
0.969
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
Algebra
Functional Analysis and Graph Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
472
142
0.301
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
Exploration Geophysics
Groundwater/Environmental Geophysics
Oil and Gas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
147
125
0.850
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
122
0.674
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
Corporate governance
Financial reporting
Voluntary disclosure
Sustainability
Auditing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
145
121
0.834
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Environmental
Exploration and Engineering Geophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
108
108
1.000
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
Finance
Governance and Human Resource Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
132
100
0.758
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
Environmental pollution
adolescent nutrition
phytoremediation
nanotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
144
96
0.667
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
Climate Sciences
Environmental Management
Spatial analyst
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
134
93
0.694
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
Entrepreneurship
Management
Strategic Management and Entrepreneurial Finance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92
85
0.924
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :24
Knowledge Graph
Machine Learning
Recommender Systems
information Retrieval and Web Search
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107
83
0.776
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :25
Biochemistry
Pharmacology
Ethnomedicine
Molecular biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76
76
1.000
KJ Umar|Kabiru Jega Umar, Kabiru J. Umar, K U Jega
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,737
962
0.554
Food CHemistry
Organic Chemistry
Organic Spectroscopy
Hydrochemistry
Tajudeen O. Yahaya
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
729
622
0.853
Genetics and Toxicology
Abdulmalik Abdulazeez
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
630
551
0.875
Ja'Afar Umar
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
776
510
0.657
Kasimu Shehu
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
699
483
0.691
Saadu Umar Wali
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
344
333
0.968
Groundwater Hydrology
Wetland Geochemistry
Bashar Haruna Gulumbe
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
304
299
0.984
Environmental public health
antimicrobial resistance
bacterial stress response
Adamu Abubakar
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
293
287
0.980
Electrical/Environmental Attributes
Potential Field
Field Exploration
Radiometric and Data Integration
Mohammed Bashar Danlami
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
444
254
0.572
Kabiru Hannafi Ibrahim
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
228
213
0.934
Econometrics
International economics
Bilateral and multilateral trade relations
environmental impact of free trade
Umar Faruk Magaji
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
222
209
0.941
Shuaibu Mukhtar
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
218
178
0.817
Insurance
Econometrics
Macroeconomics and Health Economics
Public Policy
Income Inequality.
Abdulaziz Shehu
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
192
157
0.818
Ismail Usman Kaoje
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
159
154
0.969
Natural Hazard Vulnerability Assessment
GIS and Hydrodynamic Modelling
Almustapha Umar
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
472
142
0.301
Oluwatoyin Ologe
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
147
125
0.850
Exploration Geophysics
Groundwater/Environmental Geophysics
Oil and Gas
Aliyu Abdullahi Turaki
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
122
0.674
Ali Shariff Kabara
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
145
121
0.834
Corporate governance
Financial reporting
Voluntary disclosure
Sustainability
Auditing
Abdulrahman Idris Augie
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
108
108
1.000
Environmental
Exploration and Engineering Geophysics
Sani Kabiru Saidu
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
132
100
0.758
Finance
Governance and Human Resource Management
Lawal Shuaibu
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
144
96
0.667
Environmental pollution
adolescent nutrition
phytoremediation
nanotechnology
Ishiaku Ibrahim
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
134
93
0.694
Climate Sciences
Environmental Management
Spatial analyst
Shamsudeen Kabir
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
92
85
0.924
Entrepreneurship
Management
Strategic Management and Entrepreneurial Finance
Farouk Musa Aliyu
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107
83
0.776
Knowledge Graph
Machine Learning
Recommender Systems
information Retrieval and Web Search
Ufuoma Bigila Shemishere
Federal University Birnin Kebbi
Birnin Kebbi, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76
76
1.000
Biochemistry
Pharmacology
Ethnomedicine
Molecular biology