Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
International Taxation
Tax Law
Tax Policy
Legal History
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
7
0.700
* Total i10 IndexRankings
Ranking Based On Selection :2
Income Tax Law
Value Added Tax
International Tax
Cyber Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
* Total i10 IndexRankings
Ranking Based On Selection :3
Tax Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 IndexRankings
Ranking Based On Selection :4
Tax Law
Competition Law
Internet Law
Investment Law and Human Rights Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 IndexRankings
Ranking Based On Selection :5
Tax law
Psychology
Languages
Literature
Mathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Johann Hattingh
University of Cape Town
Cape Town, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
7
0.700
Sp Van Zyl
University of Pretoria
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
Income Tax Law
Value Added Tax
International Tax
Cyber Law
Carika Keulder Fritz
University of the Witwatersrand
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Tinashe Kondo
University of the Western Cape
Bellville, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
Tax Law
Competition Law
Internet Law
Investment Law and Human Rights Law
Liezl Zwart
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0