Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
955,205
Country Rank
32,020
Institution Rank : 8
![](https://cdn.adscientificindex.com/logos/3450.png)
![Germany](/flags/de.png)
![Achim Guldner](/pictures/e0/4537910.jpg)
green software engineering
sustainable software systems
energy efficiency
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
419
329
0.785
* Total Citation Counts Rankings
World Rank
1,133,541
Country Rank
38,315
Institution Rank : 11
![](https://cdn.adscientificindex.com/logos/3450.png)
![Germany](/flags/de.png)
![Henrik te Heesen](/pictures/c6/4537912.jpg)
Photovoltaics
Renewable Energy
Simulation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
226
145
0.642
* Total Citation Counts Rankings
World Ranking
955,205
Country Ranking
32,020
Institution Ranking
8
Achim Guldner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
419
329
0.785
![](https://cdn.adscientificindex.com/logos/3450.png)
green software engineering
sustainable software systems
energy efficiency
* Total Citation Counts Rankings
World Ranking
1,133,541
Country Ranking
38,315
Institution Ranking
11
Henrik te Heesen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
226
145
0.642
![](https://cdn.adscientificindex.com/logos/3450.png)
Photovoltaics
Renewable Energy
Simulation