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Frey, H. Christopher

Frey, H. Christopher

United States Environmental Protection Agency, United States

2025 Rank: 90,391

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Engineering

SubField 1:

Environmental Engineering

SubField 2:

Logistics & Transportation

Rank in SubField 1: 418 out of 64,516 Researchers

Data For The Year: 2025
Metrics Self-Citations Excluded All
Rank Based on Composite Score90,39178,660
Total Cites5,0926,287
H-index3643
Hm-index2124
Number of Single Authored Papers1414
Total Cites to Single Authored Papers90101
Number of Single+First Authored Papers7272
Total Cites to Single+First Authored Papers2,2222,671
Number of Single+First+Last Authored Papers174174
Total Cites to Single+First+Last Authored Papers3,4964,306
Composite Score33
Number of Distinct Citing Papers3,9854,368
Ratio of Total Citations to Distinct Citing Papers 1.28 1.44
Self-Citation Percentage
19.01%
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Frey, H. Christopher

Frey, H. Christopher

United States Environmental Protection Agency, United States

2024 Rank: 93,273

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Engineering

SubField 1:

Environmental Engineering

SubField 2:

Logistics & Transportation

Rank in SubField 1: 423 out of 60,423 Researchers

Data For The Year: 2024
Metrics Self-Citations Excluded All
Rank Based on Composite Score93,27382,970
Total Cites4,6505,834
H-index3541
Hm-index2022
Number of Single Authored Papers1414
Total Cites to Single Authored Papers7889
Number of Single+First Authored Papers7272
Total Cites to Single+First Authored Papers2,0362,486
Number of Single+First+Last Authored Papers173173
Total Cites to Single+First+Last Authored Papers3,1853,992
Composite Score33
Number of Distinct Citing Papers3,6083,983
Ratio of Total Citations to Distinct Citing Papers 1.29 1.46
Self-Citation Percentage
20.29%
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Frey, H. Christopher

Frey, H. Christopher

NC State University, United States

2023 Rank: 96,783

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Engineering

SubField 1:

Environmental Engineering

SubField 2:

Logistics & Transportation

Rank in SubField 1: 435 out of 57,175 Researchers

Data For The Year: 2023
Metrics Self-Citations Excluded All
Rank Based on Composite Score96,78386,617
Total Cites4,2655,350
H-index3339
Hm-index1921
Number of Single Authored Papers1212
Total Cites to Single Authored Papers6877
Number of Single+First Authored Papers7070
Total Cites to Single+First Authored Papers1,9002,331
Number of Single+First+Last Authored Papers160160
Total Cites to Single+First+Last Authored Papers2,9343,672
Composite Score33
Number of Distinct Citing Papers3,2533,606
Ratio of Total Citations to Distinct Citing Papers 1.31 1.48
Self-Citation Percentage
20.28%
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Frey, H. Christopher

Frey, H. Christopher

NC State University, United States

2022 Rank: 104,286

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Engineering

SubField 1:

Environmental Engineering

SubField 2:

Logistics & Transportation

Rank in SubField 1: 465 out of 54,000 Researchers

Data For The Year: 2022
Metrics Self-Citations Excluded All
Rank Based on Composite Score104,28686,680
Total Cites3,7384,817
H-index3037
Hm-index1821
Number of Single Authored Papers1414
Total Cites to Single Authored Papers5666
Number of Single+First Authored Papers7272
Total Cites to Single+First Authored Papers1,7082,145
Number of Single+First+Last Authored Papers168168
Total Cites to Single+First+Last Authored Papers2,5873,337
Composite Score33
Number of Distinct Citing Papers2,8613,207
Ratio of Total Citations to Distinct Citing Papers 1.31 1.50
Self-Citation Percentage
22.40%
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Frey, H. Christopher

Frey, H. Christopher

NC State University, United States

2021 Rank: 103,768

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Engineering

SubField 1:

Environmental Engineering

SubField 2:

Logistics & Transportation

Rank in SubField 1: 463 out of 51,126 Researchers

Data For The Year: 2021
Metrics Self-Citations Excluded All
Rank Based on Composite Score103,76887,108
Total Cites3,5584,598
H-index3036
Hm-index1821
Number of Single Authored Papers1414
Total Cites to Single Authored Papers4959
Number of Single+First Authored Papers7272
Total Cites to Single+First Authored Papers1,6362,067
Number of Single+First+Last Authored Papers164164
Total Cites to Single+First+Last Authored Papers2,4663,195
Composite Score33
Number of Distinct Citing Papers2,7113,049
Ratio of Total Citations to Distinct Citing Papers 1.31 1.51
Self-Citation Percentage
22.62%
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