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
647,927
Country Rank
485
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Marinela Panayotova](/user/assets/images/profile/no-profile-photo.png)
physical chemistry
mineral processing
environment protection
water treatment
corrosion and corrosion prevention
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,058
411
0.388
* Total Citation Counts Rankings
World Rank
697,374
Country Rank
550
Institution Rank : 3
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Neli Mintcheva](/user/assets/images/profile/no-profile-photo.png)
coordination chemistry
organometallics
nanomaterials
catalysis
photocatalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
922
723
0.784
* Total Citation Counts Rankings
World Rank
838,505
Country Rank
781
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Irena Spasova](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
616
155
0.252
* Total Citation Counts Rankings
World Rank
885,077
Country Rank
856
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Vasil G. Angelov](/pictures/e0/1399970.jpg)
1. Differential Equations with Deviating Arguments 2. Fixed Point Theory 3. Classical Electrodynamics 4.Transmission Lines
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
532
148
0.278
* Total Citation Counts Rankings
World Rank
903,134
Country Rank
887
Institution Rank : 6
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Alexander Zdravkov](/pictures/53/906107.jpg)
Coal geology and petrology
Organic and inorganic geochemistry
Source rocks
Sedimentology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
501
222
0.443
* Total Citation Counts Rankings
World Rank
920,961
Country Rank
923
Institution Rank : 7
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Plamen Georgiev](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
472
136
0.288
* Total Citation Counts Rankings
World Rank
976,641
Country Rank
1,052
Institution Rank : 8
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Kamen Popov](/pictures/5d/4487044.jpg)
Geology
GIS
Remote Sensing
Mineral Deposits
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
389
154
0.396
* Total Citation Counts Rankings
World Rank
992,116
Country Rank
1,087
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Svetlana Bratkova](/user/assets/images/profile/no-profile-photo.png)
екология
микробиология
биотехнология
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
368
188
0.511
* Total Citation Counts Rankings
World Rank
1,014,802
Country Rank
1,145
Institution Rank : 10
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![George Ajdanlijsky](/pictures/c8/4539676.jpg)
sedimentology
stratigraphy
facies analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
339
125
0.369
* Total Citation Counts Rankings
World Rank
1,063,644
Country Rank
1,252
Institution Rank : 11
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Marina Nicolova](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
285
88
0.309
* Total Citation Counts Rankings
World Rank
1,108,886
Country Rank
1,357
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Boris Valchev](/user/assets/images/profile/no-profile-photo.png)
Upper Cretaceous - Palaeogene foraminiferal taxonomy
biostratigraphy and palaeoecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
245
100
0.408
* Total Citation Counts Rankings
World Rank
1,124,140
Country Rank
1,386
Institution Rank : 13
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Angelov Anatoliy; Anatoli Angelov; Anatoli T. Angelov; At Angelov](/pictures/90/4539554.jpg)
Bioremediation
wastewater treatment
microbial fuel cells
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
233
136
0.584
* Total Citation Counts Rankings
World Rank
1,166,792
Country Rank
1,487
Institution Rank : 14
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Irena Grigorova](/user/assets/images/profile/no-profile-photo.png)
Mineral processing and recycling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
203
128
0.631
* Total Citation Counts Rankings
World Rank
1,228,312
Country Rank
1,640
Institution Rank : 15
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Valentina Nikolova](/user/assets/images/profile/no-profile-photo.png)
geomorphology
GIS
cartography
landscape ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
168
149
0.887
* Total Citation Counts Rankings
World Rank
1,275,118
Country Rank
1,763
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Teodora Hristova](/user/assets/images/profile/no-profile-photo.png)
Courses Taught and Developed 1. Electromechanical Devices 2. Electrotechnical Materials
Measurement 3. electromechanical dev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146
140
0.959
* Total Citation Counts Rankings
World Rank
1,334,872
Country Rank
1,912
Institution Rank : 17
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Стефка Приставова Stefka Pristavova](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
123
48
0.390
* Total Citation Counts Rankings
World Rank
1,343,381
Country Rank
1,933
Institution Rank : 18
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Димитър Синьовски](/user/assets/images/profile/no-profile-photo.png)
геология
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120
15
0.125
* Total Citation Counts Rankings
World Rank
1,427,878
Country Rank
2,134
Institution Rank : 19
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Yassen Gorbounov](/user/assets/images/profile/no-profile-photo.png)
verilog
fpga
motor control
fuzzy logic
neural networks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93
51
0.548
* Total Citation Counts Rankings
World Rank
1,486,206
Country Rank
2,292
Institution Rank : 20
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Katerina Nikolova](/user/assets/images/profile/no-profile-photo.png)
ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78
63
0.808
* Total Citation Counts Rankings
World Rank
1,572,116
Country Rank
2,511
Institution Rank : 21
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Иван Минин](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60
38
0.633
* Total Citation Counts Rankings
World Rank
1,610,455
Country Rank
2,601
Institution Rank : 22
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Nikoleta Tzankova](/pictures/31/4837168.jpg)
Mineralogy
crystallography
petrology
gemology
archeomineralogy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53
42
0.792
* Total Citation Counts Rankings
World Rank
1,620,394
Country Rank
2,626
Institution Rank : 23
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Димитър Анастасов](/pictures/d4/4958995.jpg)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51
50
0.980
* Total Citation Counts Rankings
World Rank
1,659,264
Country Rank
2,722
Institution Rank : 24
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Rosen Ivanov](/pictures/69/4837378.jpg)
Environmental protection
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45
41
0.911
* Total Citation Counts Rankings
World Rank
1,661,766
Country Rank
2,728
Institution Rank : 25
![](https://cdn.adscientificindex.com/logos/11203.png)
![Bulgaria](/flags/bg.png)
![Елица Зарева (Елица Илиева)](/pictures/ee/4797172.jpg)
Regional geology
Field geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45
17
0.378
* 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
647,927
Country Ranking
485
Institution Ranking
2
Marinela Panayotova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,058
411
0.388
![](https://cdn.adscientificindex.com/logos/11203.png)
physical chemistry
mineral processing
environment protection
water treatment
corrosion and corrosion prevention
* Total Citation Counts Rankings
World Ranking
697,374
Country Ranking
550
Institution Ranking
3
Neli Mintcheva
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
922
723
0.784
![](https://cdn.adscientificindex.com/logos/11203.png)
coordination chemistry
organometallics
nanomaterials
catalysis
photocatalysis
* Total Citation Counts Rankings
World Ranking
838,505
Country Ranking
781
Institution Ranking
4
Irena Spasova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
616
155
0.252
* Total Citation Counts Rankings
World Ranking
885,077
Country Ranking
856
Institution Ranking
5
Vasil G. Angelov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
532
148
0.278
![](https://cdn.adscientificindex.com/logos/11203.png)
1. Differential Equations with Deviating Arguments 2. Fixed Point Theory 3. Classical Electrodynamics 4.Transmission Lines
* Total Citation Counts Rankings
World Ranking
903,134
Country Ranking
887
Institution Ranking
6
Alexander Zdravkov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
501
222
0.443
![](https://cdn.adscientificindex.com/logos/11203.png)
Coal geology and petrology
Organic and inorganic geochemistry
Source rocks
Sedimentology
* Total Citation Counts Rankings
World Ranking
920,961
Country Ranking
923
Institution Ranking
7
Plamen Georgiev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
472
136
0.288
* Total Citation Counts Rankings
World Ranking
976,641
Country Ranking
1,052
Institution Ranking
8
Kamen Popov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
389
154
0.396
![](https://cdn.adscientificindex.com/logos/11203.png)
Geology
GIS
Remote Sensing
Mineral Deposits
* Total Citation Counts Rankings
World Ranking
992,116
Country Ranking
1,087
Institution Ranking
9
Svetlana Bratkova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
368
188
0.511
![](https://cdn.adscientificindex.com/logos/11203.png)
екология
микробиология
биотехнология
* Total Citation Counts Rankings
World Ranking
1,014,802
Country Ranking
1,145
Institution Ranking
10
George Ajdanlijsky
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
339
125
0.369
![](https://cdn.adscientificindex.com/logos/11203.png)
sedimentology
stratigraphy
facies analysis
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* Total Citation Counts Rankings
World Ranking
1,063,644
Country Ranking
1,252
Institution Ranking
11
Marina Nicolova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
285
88
0.309
* Total Citation Counts Rankings
World Ranking
1,108,886
Country Ranking
1,357
Institution Ranking
12
Boris Valchev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
245
100
0.408
![](https://cdn.adscientificindex.com/logos/11203.png)
Upper Cretaceous - Palaeogene foraminiferal taxonomy
biostratigraphy and palaeoecology
* Total Citation Counts Rankings
World Ranking
1,124,140
Country Ranking
1,386
Institution Ranking
13
Angelov Anatoliy; Anatoli Angelov; Anatoli T. Angelov; At Angelov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
233
136
0.584
![](https://cdn.adscientificindex.com/logos/11203.png)
Bioremediation
wastewater treatment
microbial fuel cells
* Total Citation Counts Rankings
World Ranking
1,166,792
Country Ranking
1,487
Institution Ranking
14
Irena Grigorova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
203
128
0.631
* Total Citation Counts Rankings
World Ranking
1,228,312
Country Ranking
1,640
Institution Ranking
15
Valentina Nikolova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
168
149
0.887
![](https://cdn.adscientificindex.com/logos/11203.png)
geomorphology
GIS
cartography
landscape ecology
* Total Citation Counts Rankings
World Ranking
1,275,118
Country Ranking
1,763
Institution Ranking
16
Teodora Hristova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146
140
0.959
![](https://cdn.adscientificindex.com/logos/11203.png)
Courses Taught and Developed 1. Electromechanical Devices 2. Electrotechnical Materials
Measurement 3. electromechanical dev
* Total Citation Counts Rankings
World Ranking
1,334,872
Country Ranking
1,912
Institution Ranking
17
Стефка Приставова Stefka Pristavova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
123
48
0.390
* Total Citation Counts Rankings
World Ranking
1,343,381
Country Ranking
1,933
Institution Ranking
18
Димитър Синьовски
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120
15
0.125
* Total Citation Counts Rankings
World Ranking
1,427,878
Country Ranking
2,134
Institution Ranking
19
Yassen Gorbounov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93
51
0.548
![](https://cdn.adscientificindex.com/logos/11203.png)
verilog
fpga
motor control
fuzzy logic
neural networks
* Total Citation Counts Rankings
World Ranking
1,486,206
Country Ranking
2,292
Institution Ranking
20
Katerina Nikolova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78
63
0.808
* Total Citation Counts Rankings
World Ranking
1,572,116
Country Ranking
2,511
Institution Ranking
21
Иван Минин
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60
38
0.633
* Total Citation Counts Rankings
World Ranking
1,610,455
Country Ranking
2,601
Institution Ranking
22
Nikoleta Tzankova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53
42
0.792
![](https://cdn.adscientificindex.com/logos/11203.png)
Mineralogy
crystallography
petrology
gemology
archeomineralogy
* Total Citation Counts Rankings
World Ranking
1,620,394
Country Ranking
2,626
Institution Ranking
23
Димитър Анастасов
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51
50
0.980
* Total Citation Counts Rankings
World Ranking
1,659,264
Country Ranking
2,722
Institution Ranking
24
Rosen Ivanov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45
41
0.911
* Total Citation Counts Rankings
World Ranking
1,661,766
Country Ranking
2,728
Institution Ranking
25
Елица Зарева (Елица Илиева)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45
17
0.378
![](https://cdn.adscientificindex.com/logos/11203.png)
Regional geology
Field geology