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Lammertsma, Koop

Lammertsma, Koop

University of Johannesburg, South Africa

2025 Rank: 91,635

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Organic Chemistry

SubField 2:

General Chemistry

Rank in SubField 1: 1,647 out of 179,164 Researchers

Data For The Year: 2025
Metrics Self-Citations Excluded All
Rank Based on Composite Score91,63587,288
Total Cites7,2798,700
H-index4348
Hm-index2225
Number of Single Authored Papers77
Total Cites to Single Authored Papers4951
Number of Single+First Authored Papers3939
Total Cites to Single+First Authored Papers9651,161
Number of Single+First+Last Authored Papers209209
Total Cites to Single+First+Last Authored Papers5,7456,786
Composite Score33
Number of Distinct Citing Papers5,1645,662
Ratio of Total Citations to Distinct Citing Papers 1.41 1.54
Self-Citation Percentage
16.33%
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Lammertsma, Koop

Lammertsma, Koop

University of Johannesburg, South Africa

2024 Rank: 88,531

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Organic Chemistry

SubField 2:

General Chemistry

Rank in SubField 1: 1,613 out of 170,049 Researchers

Data For The Year: 2024
Metrics Self-Citations Excluded All
Rank Based on Composite Score88,53184,216
Total Cites6,9248,323
H-index4246
Hm-index2124
Number of Single Authored Papers77
Total Cites to Single Authored Papers4951
Number of Single+First Authored Papers3939
Total Cites to Single+First Authored Papers9471,143
Number of Single+First+Last Authored Papers206206
Total Cites to Single+First+Last Authored Papers5,5056,531
Composite Score33
Number of Distinct Citing Papers4,9185,406
Ratio of Total Citations to Distinct Citing Papers 1.41 1.54
Self-Citation Percentage
16.81%
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Lammertsma, Koop

Lammertsma, Koop

University of Johannesburg, South Africa

2023 Rank: 85,447

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Organic Chemistry

SubField 2:

General Chemistry

Rank in SubField 1: 1,591 out of 161,671 Researchers

Data For The Year: 2023
Metrics Self-Citations Excluded All
Rank Based on Composite Score85,44780,977
Total Cites6,5687,955
H-index4145
Hm-index2023
Number of Single Authored Papers77
Total Cites to Single Authored Papers4951
Number of Single+First Authored Papers3939
Total Cites to Single+First Authored Papers9381,133
Number of Single+First+Last Authored Papers200200
Total Cites to Single+First+Last Authored Papers5,2566,273
Composite Score33
Number of Distinct Citing Papers4,6515,132
Ratio of Total Citations to Distinct Citing Papers 1.41 1.55
Self-Citation Percentage
17.44%
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Lammertsma, Koop

Lammertsma, Koop

University of Johannesburg, South Africa

2022 Rank: 81,185

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Organic Chemistry

SubField 2:

General Chemistry

Rank in SubField 1: 1,549 out of 154,108 Researchers

Data For The Year: 2022
Metrics Self-Citations Excluded All
Rank Based on Composite Score81,18575,379
Total Cites6,1597,531
H-index3944
Hm-index2023
Number of Single Authored Papers77
Total Cites to Single Authored Papers4749
Number of Single+First Authored Papers3939
Total Cites to Single+First Authored Papers9131,107
Number of Single+First+Last Authored Papers199199
Total Cites to Single+First+Last Authored Papers4,9375,943
Composite Score33
Number of Distinct Citing Papers4,3524,823
Ratio of Total Citations to Distinct Citing Papers 1.42 1.56
Self-Citation Percentage
18.22%
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Lammertsma, Koop

Lammertsma, Koop

University of Johannesburg, South Africa

2021 Rank: 79,141

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Organic Chemistry

SubField 2:

General Chemistry

Rank in SubField 1: 1,477 out of 144,918 Researchers

Data For The Year: 2021
Metrics Self-Citations Excluded All
Rank Based on Composite Score79,14173,586
Total Cites5,9077,245
H-index3843
Hm-index2023
Number of Single Authored Papers77
Total Cites to Single Authored Papers4648
Number of Single+First Authored Papers3939
Total Cites to Single+First Authored Papers8901,083
Number of Single+First+Last Authored Papers198198
Total Cites to Single+First+Last Authored Papers4,7415,720
Composite Score33
Number of Distinct Citing Papers4,1824,644
Ratio of Total Citations to Distinct Citing Papers 1.41 1.56
Self-Citation Percentage
18.47%
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Lammertsma, Koop

Lammertsma, Koop

University of Johannesburg, South Africa

2020 Rank: 76,575

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Organic Chemistry

SubField 2:

General Chemistry

Rank in SubField 1: 1,431 out of 111,388 Researchers

Data For The Year: 2020
Metrics Self-Citations Excluded All
Rank Based on Composite Score76,57569,961
Total Cites5,3486,652
H-index3742
Hm-index1922
Number of Single Authored Papers77
Total Cites to Single Authored Papers4648
Number of Single+First Authored Papers3939
Total Cites to Single+First Authored Papers8631,053
Number of Single+First+Last Authored Papers197197
Total Cites to Single+First+Last Authored Papers4,3235,284
Composite Score33
Number of Distinct Citing Papers3,8014,245
Ratio of Total Citations to Distinct Citing Papers 1.41 1.57
Self-Citation Percentage
19.60%
Found an error in your data? Contact us with your profile link. Contact Us →
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