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Gray, Leon Earl

Gray, Leon Earl

United States Environmental Protection Agency, United States

2026 Rank: 232,734

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Biomedical Research

SubField 1:

Toxicology

SubField 2:

Environmental Sciences

Rank in SubField 1: 880 out of 69,049 Researchers

Data For The Year: 2026
Metrics Self-Citations Excluded All
Rank Based on Composite Score232,734231,327
Total Cites414458
H-index1010
Hm-index34
Number of Single Authored Papers77
Total Cites to Single Authored Papers11
Number of Single+First Authored Papers5757
Total Cites to Single+First Authored Papers7886
Number of Single+First+Last Authored Papers127127
Total Cites to Single+First+Last Authored Papers287324
Composite Score22
Number of Distinct Citing Papers309316
Ratio of Total Citations to Distinct Citing Papers 1.34 1.45
Self-Citation Percentage
9.61%
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Gray, Leon Earl

Gray, Leon Earl

United States Environmental Protection Agency, United States

2025 Rank: 182,829

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Biomedical Research

SubField 1:

Toxicology

SubField 2:

Environmental Sciences

Rank in SubField 1: 696 out of 67,220 Researchers

Data For The Year: 2025
Metrics Self-Citations Excluded All
Rank Based on Composite Score182,829205,683
Total Cites406424
H-index99
Hm-index44
Number of Single Authored Papers77
Total Cites to Single Authored Papers22
Number of Single+First Authored Papers5757
Total Cites to Single+First Authored Papers7072
Number of Single+First+Last Authored Papers126126
Total Cites to Single+First+Last Authored Papers290304
Composite Score22
Number of Distinct Citing Papers302310
Ratio of Total Citations to Distinct Citing Papers 1.34 1.37
Self-Citation Percentage
4.25%
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Gray, Leon Earl

Gray, Leon Earl

United States Environmental Protection Agency, United States

2024 Rank: 122,404

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Biomedical Research

SubField 1:

Toxicology

SubField 2:

Environmental Sciences

Rank in SubField 1: 477 out of 65,055 Researchers

Data For The Year: 2024
Metrics Self-Citations Excluded All
Rank Based on Composite Score122,404139,786
Total Cites526547
H-index1212
Hm-index45
Number of Single Authored Papers77
Total Cites to Single Authored Papers22
Number of Single+First Authored Papers5757
Total Cites to Single+First Authored Papers6666
Number of Single+First+Last Authored Papers126126
Total Cites to Single+First+Last Authored Papers369373
Composite Score22
Number of Distinct Citing Papers375385
Ratio of Total Citations to Distinct Citing Papers 1.40 1.42
Self-Citation Percentage
3.84%
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Gray, Leon Earl

Gray, Leon Earl

US EPA National Health and Environmental Effects Research Laboratory, United States

2023 Rank: 75,041

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Biomedical Research

SubField 1:

Toxicology

SubField 2:

Environmental Sciences

Rank in SubField 1: 281 out of 61,487 Researchers

Data For The Year: 2023
Metrics Self-Citations Excluded All
Rank Based on Composite Score75,04180,338
Total Cites595627
H-index1313
Hm-index45
Number of Single Authored Papers77
Total Cites to Single Authored Papers66
Number of Single+First Authored Papers5757
Total Cites to Single+First Authored Papers111114
Number of Single+First+Last Authored Papers126126
Total Cites to Single+First+Last Authored Papers406431
Composite Score22
Number of Distinct Citing Papers419424
Ratio of Total Citations to Distinct Citing Papers 1.42 1.48
Self-Citation Percentage
5.10%
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