Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Gralf Peter Calliess](https://cdn.adscientificindex.com/pictures/c1/1782972.jpg)
Transnational Private Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
11
0.282
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Jean Yves Gerlitz](/user/assets/images/profile/no-profile-photo.png)
poverty
economic vulnerability
labour markets
social change
social justice
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
22
0.759
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Johannes Feest](https://cdn.adscientificindex.com/pictures/04/1782978.jpg)
Criminal justice
prisons
legal cultures
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
11
0.393
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Stefan Thierse](/user/assets/images/profile/no-profile-photo.png)
EU governance
European Parliament
Comparative Law and Politics
organized interests
political and legal mobilization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Bahador Makki](/user/assets/images/profile/no-profile-photo.png)
Computer Engineering
Control Systems Engineering
Computer Science
Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Douglas Elmauer](/user/assets/images/profile/no-profile-photo.png)
Law
Political Economy
Data Science
Sociology
Theory of Evolution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Frederick Rieländer](/user/assets/images/profile/no-profile-photo.png)
Private Law
Private International Law
and Comparative Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Nicholas Mouttotos](/user/assets/images/profile/no-profile-photo.png)
Comparative Law
Private International Law
Contract Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Gralf Peter Calliess
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
11
0.282
Jean Yves Gerlitz
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
22
0.759
poverty
economic vulnerability
labour markets
social change
social justice
Johannes Feest
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
11
0.393
Stefan Thierse
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
EU governance
European Parliament
Comparative Law and Politics
organized interests
political and legal mobilization
Bahador Makki
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
Computer Engineering
Control Systems Engineering
Computer Science
Law
Douglas Elmauer
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
Law
Political Economy
Data Science
Sociology
Theory of Evolution
Frederick Rieländer
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Private Law
Private International Law
and Comparative Law
Nicholas Mouttotos
Universität Bremen
Bremen, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Comparative Law
Private International Law
Contract Law