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
434,949
Country Rank
247
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Stoyan Groudev](/user/assets/images/profile/no-profile-photo.png)
Biohydrometallurgy
Bioremediation
Microbiology
Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,978
335
0.169
* Total Citation Counts Rankings
World Rank
863,140
Country Rank
821
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/11010.png)
![Bulgaria](/flags/bg.png)
![Teodora P. Popova](/pictures/b0/4488695.jpg)
Microbiology
Antimicrobial activity of compounds
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
570
414
0.726
* Total Citation Counts Rankings
World Rank
919,343
Country Rank
918
Institution Rank : 32
![](https://cdn.adscientificindex.com/logos/5625.jpg)
![Bulgaria](/flags/bg.png)
![Raina Gergova](/pictures/ff/4818472.jpg)
clinical microbiology
virulence factors
mechanisms of resistance to antimicrobials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
474
353
0.745
* Total Citation Counts Rankings
World Rank
952,416
Country Rank
561
Institution Rank : 261
![](https://cdn.adscientificindex.com/logos/11428.jpg)
![Estonia](/flags/ee.png)
![Sofia Raquel Alves Oliveira](/pictures/3e/4848577.jpg)
Microbiology
biochemistry
molecular biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
423
382
0.903
* Total Citation Counts Rankings
World Rank
979,126
Country Rank
1,057
Institution Rank : 40
![](https://cdn.adscientificindex.com/logos/5625.jpg)
![Bulgaria](/flags/bg.png)
![Valeri Velev](/pictures/4f/4818473.jpg)
Infectious Diseases
Parasitology
Pediatrics
Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
385
337
0.875
* Total Citation Counts Rankings
World Rank
1,190,660
Country Rank
301,772
Institution Rank : 2,618
![](https://cdn.adscientificindex.com/logos/11280.jpg)
![United States](/flags/us.png)
![Sofia M Murga-Garrido](/pictures/95/5109960.jpg)
Gut microbiome
skin microbiome
host-microbe/microbiome interaction
medicine
microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
188
187
0.995
* Total Citation Counts Rankings
World Rank
1,227,361
Country Rank
1,639
Institution Rank : 192
![](https://cdn.adscientificindex.com/logos/8217.jpg)
![Bulgaria](/flags/bg.png)
![Trayana Nedeva](/user/assets/images/profile/no-profile-photo.png)
Microbial physiology and biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
169
45
0.266
* Total Citation Counts Rankings
World Rank
1,589,236
Country Rank
2,554
Institution Rank : 98
![](https://cdn.adscientificindex.com/logos/5625.jpg)
![Bulgaria](/flags/bg.png)
![Lena Sechanova](/user/assets/images/profile/no-profile-photo.png)
Medical Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
18
0.316
* Total Citation Counts Rankings
World Ranking
434,949
Country Ranking
247
Institution Ranking
1
Stoyan Groudev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,978
335
0.169
![](https://cdn.adscientificindex.com/logos/11203.png)
Biohydrometallurgy
Bioremediation
Microbiology
Biotechnology
* Total Citation Counts Rankings
World Ranking
863,140
Country Ranking
821
Institution Ranking
5
Teodora P. Popova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
570
414
0.726
![](https://cdn.adscientificindex.com/logos/11010.png)
Microbiology
Antimicrobial activity of compounds
* Total Citation Counts Rankings
World Ranking
919,343
Country Ranking
918
Institution Ranking
32
Raina Gergova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
474
353
0.745
![](https://cdn.adscientificindex.com/logos/5625.jpg)
clinical microbiology
virulence factors
mechanisms of resistance to antimicrobials
* Total Citation Counts Rankings
World Ranking
952,416
Country Ranking
561
Institution Ranking
261
Sofia Raquel Alves Oliveira
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
423
382
0.903
![](https://cdn.adscientificindex.com/logos/11428.jpg)
Microbiology
biochemistry
molecular biology
* Total Citation Counts Rankings
World Ranking
979,126
Country Ranking
1,057
Institution Ranking
40
Valeri Velev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
385
337
0.875
![](https://cdn.adscientificindex.com/logos/5625.jpg)
Infectious Diseases
Parasitology
Pediatrics
Microbiology
* Total Citation Counts Rankings
World Ranking
1,190,660
Country Ranking
301,772
Institution Ranking
2,618
Sofia M Murga-Garrido
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
188
187
0.995
![](https://cdn.adscientificindex.com/logos/11280.jpg)
Gut microbiome
skin microbiome
host-microbe/microbiome interaction
medicine
microbiology
* Total Citation Counts Rankings
World Ranking
1,227,361
Country Ranking
1,639
Institution Ranking
192
Trayana Nedeva
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
169
45
0.266
![](https://cdn.adscientificindex.com/logos/8217.jpg)
Microbial physiology and biochemistry
* Total Citation Counts Rankings
World Ranking
1,589,236
Country Ranking
2,554
Institution Ranking
98
Lena Sechanova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
18
0.316
![](https://cdn.adscientificindex.com/logos/5625.jpg)
Medical Microbiology