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
135,721
Country Rank
47
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Virginia Kiryakova](https://cdn.adscientificindex.com/pictures/85/4413167.jpg)
Mathematics
Physics
Computer Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,346
3,446
0.469
* Total Citation Counts Rankings
World Rank
147,489
Country Rank
51
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Vasil Kolev](/user/assets/images/profile/no-profile-photo.png)
neuroscience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,794
1,758
0.259
* Total Citation Counts Rankings
World Rank
215,267
Country Rank
81
Institution Rank : 3
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Vladimir Gerdjikov, Vladimir Gerdzhikov](https://cdn.adscientificindex.com/pictures/24/5005613.jpg)
mathematical physics
soliton theory
soliton interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,638
1,438
0.310
* Total Citation Counts Rankings
World Rank
260,321
Country Rank
107
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Svetoslav Markov](https://cdn.adscientificindex.com/pictures/cd/4413188.jpg)
biomathematics
interval analysis
enzyme kinetics
mathematical modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,770
1,547
0.410
* Total Citation Counts Rankings
World Rank
302,496
Country Rank
133
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Iva Apostolova](/user/assets/images/profile/no-profile-photo.png)
vegetation
ecology
botany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,162
1,840
0.582
* Total Citation Counts Rankings
World Rank
303,852
Country Rank
135
Institution Rank : 6
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Vesselin Drensky](/user/assets/images/profile/no-profile-photo.png)
Algebra
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,146
921
0.293
* Total Citation Counts Rankings
World Rank
421,854
Country Rank
234
Institution Rank : 7
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Dimiter Ivanov](https://cdn.adscientificindex.com/pictures/dc/4413257.jpg)
miocene
palynology
botany
vegetation
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,068
745
0.360
* Total Citation Counts Rankings
World Rank
430,282
Country Rank
240
Institution Rank : 8
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Petar Kenderov](/user/assets/images/profile/no-profile-photo.png)
Topology
Convex analysis
Optimization
Banach spaces
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,014
433
0.215
* Total Citation Counts Rankings
World Rank
434,532
Country Rank
243
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Emilia Bazhlekova](/user/assets/images/profile/no-profile-photo.png)
Fractional Calculus
Operational Calculus
Mathematical Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,986
1,138
0.573
* Total Citation Counts Rankings
World Rank
507,421
Country Rank
317
Institution Rank : 10
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Iliya D. Iliev](https://cdn.adscientificindex.com/pictures/8b/4413288.jpg)
Differential equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
430
0.271
* Total Citation Counts Rankings
World Rank
535,515
Country Rank
344
Institution Rank : 11
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Popova ED](https://cdn.adscientificindex.com/pictures/25/4413292.jpg)
interval arithmetic
linear systems
enclosure methods
mathematical software
modelling with uncertain data
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,461
362
0.248
* Total Citation Counts Rankings
World Rank
539,896
Country Rank
352
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Tsviatko Rangelov](https://cdn.adscientificindex.com/pictures/f9/4413327.jpg)
differential and integral equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,442
576
0.399
* Total Citation Counts Rankings
World Rank
569,436
Country Rank
400
Institution Rank : 13
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Hristo Pedashenko](/user/assets/images/profile/no-profile-photo.png)
Phytocoenology
Biodiversity
Habitats
Nature Conservation
Habitat Mapping
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,323
934
0.706
* Total Citation Counts Rankings
World Rank
607,021
Country Rank
435
Institution Rank : 14
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Антонина Виткова](/user/assets/images/profile/no-profile-photo.png)
ботаника
лечебни растения
in situ
ex situ
опазване
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,189
447
0.376
* Total Citation Counts Rankings
World Rank
636,604
Country Rank
469
Institution Rank : 15
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Ivan Bazhlekov](/user/assets/images/profile/no-profile-photo.png)
Computational mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,095
420
0.384
* Total Citation Counts Rankings
World Rank
639,406
Country Rank
478
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Svetlana Bancheva](https://cdn.adscientificindex.com/pictures/d5/4413376.jpg)
ботаника
таксономия
редки видове растения
защитени територии
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,086
480
0.442
* Total Citation Counts Rankings
World Rank
664,428
Country Rank
513
Institution Rank : 17
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Dimitrinka Yordanova Atanasova](/user/assets/images/profile/no-profile-photo.png)
Neuroscience
Neuromorphology
Glia
Carotid body
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,013
732
0.723
* Total Citation Counts Rankings
World Rank
681,917
Country Rank
534
Institution Rank : 18
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Plamen Pilarski](/user/assets/images/profile/no-profile-photo.png)
алгология
биотехнология
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
965
569
0.590
* Total Citation Counts Rankings
World Rank
687,593
Country Rank
541
Institution Rank : 19
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![I Bouyukliev](https://cdn.adscientificindex.com/pictures/6f/4413420.jpg)
algorithms
coding theory
isomorphism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
950
370
0.389
* Total Citation Counts Rankings
World Rank
706,084
Country Rank
560
Institution Rank : 20
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Galina Bogdanova](https://cdn.adscientificindex.com/pictures/17/4413415.jpg)
Codes theory
data bases
watermarking
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
903
343
0.380
* Total Citation Counts Rankings
World Rank
710,507
Country Rank
566
Institution Rank : 21
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Dimitar P. Guelev](https://cdn.adscientificindex.com/pictures/7f/4413379.jpg)
temporal logic
epistemic logic
modal logic
theoretical computer science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
892
143
0.160
* Total Citation Counts Rankings
World Rank
713,726
Country Rank
570
Institution Rank : 22
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Stanislav G Yanev](https://cdn.adscientificindex.com/pictures/c8/4413395.jpg)
pharmacology
toxicology
drug metabolism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
884
240
0.271
* Total Citation Counts Rankings
World Rank
729,867
Country Rank
597
Institution Rank : 23
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Todorka Alexandrova](https://cdn.adscientificindex.com/pictures/08/4413413.jpg)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
845
273
0.323
* Total Citation Counts Rankings
World Rank
746,201
Country Rank
622
Institution Rank : 24
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Nikolai Nikolov](https://cdn.adscientificindex.com/pictures/2e/4413450.jpg)
Several complex variables
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
807
391
0.485
* Total Citation Counts Rankings
World Rank
748,401
Country Rank
626
Institution Rank : 25
![](https://cdn.adscientificindex.com/logos/28609.png)
![Bulgaria](/flags/bg.png)
![Mladen Savov](https://cdn.adscientificindex.com/pictures/43/4413435.jpg)
Probability theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
802
428
0.534
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
135,721
![Bulgaria](/flags/bg.png)
47
![](https://cdn.adscientificindex.com/logos/28609.png)
1
Virginia Kiryakova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,346
3,446
0.469
![](https://cdn.adscientificindex.com/logos/28609.png)
Mathematics
Physics
Computer Science
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
147,489
![Bulgaria](/flags/bg.png)
51
![](https://cdn.adscientificindex.com/logos/28609.png)
2
Vasil Kolev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,794
1,758
0.259
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
215,267
![Bulgaria](/flags/bg.png)
81
![](https://cdn.adscientificindex.com/logos/28609.png)
3
Vladimir Gerdjikov, Vladimir Gerdzhikov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,638
1,438
0.310
![](https://cdn.adscientificindex.com/logos/28609.png)
mathematical physics
soliton theory
soliton interactions
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
260,321
![Bulgaria](/flags/bg.png)
107
![](https://cdn.adscientificindex.com/logos/28609.png)
4
Svetoslav Markov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,770
1,547
0.410
![](https://cdn.adscientificindex.com/logos/28609.png)
biomathematics
interval analysis
enzyme kinetics
mathematical modelling
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
302,496
![Bulgaria](/flags/bg.png)
133
![](https://cdn.adscientificindex.com/logos/28609.png)
5
Iva Apostolova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,162
1,840
0.582
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
303,852
![Bulgaria](/flags/bg.png)
135
![](https://cdn.adscientificindex.com/logos/28609.png)
6
Vesselin Drensky
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,146
921
0.293
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
421,854
![Bulgaria](/flags/bg.png)
234
![](https://cdn.adscientificindex.com/logos/28609.png)
7
Dimiter Ivanov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,068
745
0.360
![](https://cdn.adscientificindex.com/logos/28609.png)
miocene
palynology
botany
vegetation
climate change
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
430,282
![Bulgaria](/flags/bg.png)
240
![](https://cdn.adscientificindex.com/logos/28609.png)
8
Petar Kenderov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,014
433
0.215
![](https://cdn.adscientificindex.com/logos/28609.png)
Topology
Convex analysis
Optimization
Banach spaces
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
434,532
![Bulgaria](/flags/bg.png)
243
![](https://cdn.adscientificindex.com/logos/28609.png)
9
Emilia Bazhlekova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,986
1,138
0.573
![](https://cdn.adscientificindex.com/logos/28609.png)
Fractional Calculus
Operational Calculus
Mathematical Physics
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
507,421
![Bulgaria](/flags/bg.png)
317
![](https://cdn.adscientificindex.com/logos/28609.png)
10
Iliya D. Iliev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
430
0.271
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* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
535,515
![Bulgaria](/flags/bg.png)
344
![](https://cdn.adscientificindex.com/logos/28609.png)
11
Popova ED
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,461
362
0.248
![](https://cdn.adscientificindex.com/logos/28609.png)
interval arithmetic
linear systems
enclosure methods
mathematical software
modelling with uncertain data
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
539,896
![Bulgaria](/flags/bg.png)
352
![](https://cdn.adscientificindex.com/logos/28609.png)
12
Tsviatko Rangelov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,442
576
0.399
![](https://cdn.adscientificindex.com/logos/28609.png)
differential and integral equations
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
569,436
![Bulgaria](/flags/bg.png)
400
![](https://cdn.adscientificindex.com/logos/28609.png)
13
Hristo Pedashenko
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,323
934
0.706
![](https://cdn.adscientificindex.com/logos/28609.png)
Phytocoenology
Biodiversity
Habitats
Nature Conservation
Habitat Mapping
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
607,021
![Bulgaria](/flags/bg.png)
435
![](https://cdn.adscientificindex.com/logos/28609.png)
14
Антонина Виткова
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,189
447
0.376
![](https://cdn.adscientificindex.com/logos/28609.png)
ботаника
лечебни растения
in situ
ex situ
опазване
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
636,604
![Bulgaria](/flags/bg.png)
469
![](https://cdn.adscientificindex.com/logos/28609.png)
15
Ivan Bazhlekov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,095
420
0.384
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
639,406
![Bulgaria](/flags/bg.png)
478
![](https://cdn.adscientificindex.com/logos/28609.png)
16
Svetlana Bancheva
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,086
480
0.442
![](https://cdn.adscientificindex.com/logos/28609.png)
ботаника
таксономия
редки видове растения
защитени територии
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
664,428
![Bulgaria](/flags/bg.png)
513
![](https://cdn.adscientificindex.com/logos/28609.png)
17
Dimitrinka Yordanova Atanasova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,013
732
0.723
![](https://cdn.adscientificindex.com/logos/28609.png)
Neuroscience
Neuromorphology
Glia
Carotid body
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
681,917
![Bulgaria](/flags/bg.png)
534
![](https://cdn.adscientificindex.com/logos/28609.png)
18
Plamen Pilarski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
965
569
0.590
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
687,593
![Bulgaria](/flags/bg.png)
541
![](https://cdn.adscientificindex.com/logos/28609.png)
19
I Bouyukliev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
950
370
0.389
![](https://cdn.adscientificindex.com/logos/28609.png)
algorithms
coding theory
isomorphism
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
706,084
![Bulgaria](/flags/bg.png)
560
![](https://cdn.adscientificindex.com/logos/28609.png)
20
Galina Bogdanova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
903
343
0.380
![](https://cdn.adscientificindex.com/logos/28609.png)
Codes theory
data bases
watermarking
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
710,507
![Bulgaria](/flags/bg.png)
566
![](https://cdn.adscientificindex.com/logos/28609.png)
21
Dimitar P. Guelev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
892
143
0.160
![](https://cdn.adscientificindex.com/logos/28609.png)
temporal logic
epistemic logic
modal logic
theoretical computer science
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
713,726
![Bulgaria](/flags/bg.png)
570
![](https://cdn.adscientificindex.com/logos/28609.png)
22
Stanislav G Yanev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
884
240
0.271
![](https://cdn.adscientificindex.com/logos/28609.png)
pharmacology
toxicology
drug metabolism
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
729,867
![Bulgaria](/flags/bg.png)
597
![](https://cdn.adscientificindex.com/logos/28609.png)
23
Todorka Alexandrova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
845
273
0.323
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
746,201
![Bulgaria](/flags/bg.png)
622
![](https://cdn.adscientificindex.com/logos/28609.png)
24
Nikolai Nikolov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
807
391
0.485
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
748,401
![Bulgaria](/flags/bg.png)
626
![](https://cdn.adscientificindex.com/logos/28609.png)
25
Mladen Savov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
802
428
0.534