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. Click for "last 6 years' i10 index". Also see: Universities Rankings 2024 (Sort by : Total i10 Index) and Universities Rankings 2024 (Sort by : Last 6 Years i10 Index)
* Total i10 Index Rankings
World Rank
831,748
Country Rank
891
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Ventzeslav Valev](/pictures/8a/4484969.jpg)
pattern recognition
machine learning
computer vision
data mining
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
0
0.000
* Total i10 Index Rankings
World Rank
976,352
Country Rank
1,120
Institution Rank : 27
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Hamed Pejhan](/pictures/be/4571626.jpg)
Mathematical Physics
Group Representation Theory
QFT in Curved Spacetimes
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
* Total i10 Index Rankings
World Rank
980,698
Country Rank
1,136
Institution Rank : 30
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Eugenia Stoimenova](/pictures/d7/5177619.jpg)
Nonparametric statistics
Statistical modeling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
3
0.333
* Total i10 Index Rankings
World Rank
982,885
Country Rank
1,147
Institution Rank : 32
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Krassimira Ivanova](/pictures/d5/4501368.jpg)
Data Mining
Image Retrieval
Data Bases
Information Systems
Digitization of Cultural Heritage
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
1
0.111
* Total i10 Index Rankings
World Rank
983,049
Country Rank
1,148
Institution Rank : 33
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Yuri Borissov](/pictures/98/5167426.jpg)
discrete mathematics
coding theory
cryptology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
1
0.111
* Total i10 Index Rankings
World Rank
983,364
Country Rank
1,151
Institution Rank : 35
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Irina Georgieva](/user/assets/images/profile/no-profile-photo.png)
mathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
1
0.111
* Total i10 Index Rankings
World Rank
1,067,008
Country Rank
1,295
Institution Rank : 55
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Peter Rashkov](/pictures/9e/5461076.jpg)
Mathematics
Biomathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
5
0.714
* Total i10 Index Rankings
World Rank
1,081,537
Country Rank
1,340
Institution Rank : 61
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Vera Angelova](/user/assets/images/profile/no-profile-photo.png)
applied mathematics
computaional mathematics
numerical analysis
perturbation analysis
round-off errors
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
2
0.286
* Total i10 Index Rankings
World Rank
1,111,690
Country Rank
1,381
Institution Rank : 65
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Milen Borisov](/pictures/38/5173149.jpg)
Mathematical modeling of biological processes
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
* Total i10 Index Rankings
World Rank
1,139,611
Country Rank
1,439
Institution Rank : 70
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Silvia Boumova](/user/assets/images/profile/no-profile-photo.png)
Mathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
3
0.500
* Total i10 Index Rankings
World Rank
1,147,775
Country Rank
1,479
Institution Rank : 80
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Ivan Derzhanski](/user/assets/images/profile/no-profile-photo.png)
linguistic problems
aspectology
semantics
morphology
writing systems
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
1
0.167
* Total i10 Index Rankings
World Rank
1,219,154
Country Rank
1,626
Institution Rank : 94
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![K Sotirova-Valkova](/pictures/5d/5172678.jpg)
Heritage Studies
Museum Informatics
Digital Humanities
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
2
0.400
* Total i10 Index Rankings
World Rank
1,225,040
Country Rank
1,649
Institution Rank : 96
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Димитринка Владева](/pictures/be/5166244.jpg)
algebra
probability
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
0
0.000
* Total i10 Index Rankings
World Rank
1,225,690
Country Rank
1,651
Institution Rank : 97
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Strashimir Popvassilev](/pictures/b4/5171878.jpg)
general topology
set theory
combinatorial geometry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
0
0.000
* Total i10 Index Rankings
World Rank
1,444,210
Country Rank
2,076
Institution Rank : 132
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Nikolay Ikonomov](/pictures/54/5166952.jpg)
complex approximations
Pade approximation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Total i10 Index Rankings
World Rank
1,585,617
Country Rank
2,343
Institution Rank : 150
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Vladimir Sotirov](/user/assets/images/profile/no-profile-photo.png)
Mathematical Logic
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
1
0.500
* Total i10 Index Rankings
World Rank
1,607,318
Country Rank
2,429
Institution Rank : 154
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Tatyana Ivanova](/pictures/49/5467460.jpg)
Mathematical Logic
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
0
0.000
* Total i10 Index Rankings
World Rank
1,633,564
Country Rank
2,522
Institution Rank : 165
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Nikolay Nikolov](/user/assets/images/profile/no-profile-photo.png)
Statistics
Rank data
Statistical modeling
Reliability
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
* Total i10 Index Rankings
World Rank
1,826,785
Country Rank
2,813
Institution Rank : 171
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Ognian Kassabov](/user/assets/images/profile/no-profile-photo.png)
Differential geometry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 Index Rankings
World Rank
1,828,864
Country Rank
2,841
Institution Rank : 173
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Neli Maneva](/user/assets/images/profile/no-profile-photo.png)
Software Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 Index Rankings
World Rank
1,843,803
Country Rank
2,929
Institution Rank : 179
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Veselin Vavrek](/user/assets/images/profile/no-profile-photo.png)
combinatorics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 Index Rankings
World Rank
1,851,983
Country Rank
2,977
Institution Rank : 181
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Teodor Boyadzhiev](/pictures/15/5172917.jpg)
Machine Learning
Bayesian Analysis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 Index Rankings
World Rank
1,875,901
Country Rank
3,043
Institution Rank : 184
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Galina Momcheva](/pictures/1c/4658348.jpg)
Programming
Algorithms
Biomedical Image Analysis
ANN
Data Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 Index Rankings
World Rank
1,878,655
Country Rank
3,065
Institution Rank : 187
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Todor Branzov](/user/assets/images/profile/no-profile-photo.png)
Software Engineering
Software Information Systems
Virtual Communities
Project Management
Crowd-sourcing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 Index Rankings
World Rank
1,888,897
Country Rank
3,144
Institution Rank : 197
![](https://cdn.adscientificindex.com/logos/28324.png)
![Bulgaria](/flags/bg.png)
![Dimitar Slavchev](/user/assets/images/profile/no-profile-photo.png)
Applied mathematics
hierarchical methods
soving dense structured systems of linear equations
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 Index Rankings
World Ranking
831,748
Country Ranking
891
Institution Ranking
12
Ventzeslav Valev
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
0
0.000
![](https://cdn.adscientificindex.com/logos/28324.png)
pattern recognition
machine learning
computer vision
data mining
* Total i10 Index Rankings
World Ranking
976,352
Country Ranking
1,120
Institution Ranking
27
Hamed Pejhan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
![](https://cdn.adscientificindex.com/logos/28324.png)
Mathematical Physics
Group Representation Theory
QFT in Curved Spacetimes
* Total i10 Index Rankings
World Ranking
980,698
Country Ranking
1,136
Institution Ranking
30
Eugenia Stoimenova
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
3
0.333
![](https://cdn.adscientificindex.com/logos/28324.png)
Nonparametric statistics
Statistical modeling
* Total i10 Index Rankings
World Ranking
982,885
Country Ranking
1,147
Institution Ranking
32
Krassimira Ivanova
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
1
0.111
![](https://cdn.adscientificindex.com/logos/28324.png)
Data Mining
Image Retrieval
Data Bases
Information Systems
Digitization of Cultural Heritage
* Total i10 Index Rankings
World Ranking
983,049
Country Ranking
1,148
Institution Ranking
33
Yuri Borissov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
1
0.111
![](https://cdn.adscientificindex.com/logos/28324.png)
discrete mathematics
coding theory
cryptology
* Total i10 Index Rankings
World Ranking
983,364
Country Ranking
1,151
Institution Ranking
35
Irina Georgieva
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
1
0.111
* Total i10 Index Rankings
World Ranking
1,067,008
Country Ranking
1,295
Institution Ranking
55
Peter Rashkov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
5
0.714
* Total i10 Index Rankings
World Ranking
1,081,537
Country Ranking
1,340
Institution Ranking
61
Vera Angelova
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
2
0.286
![](https://cdn.adscientificindex.com/logos/28324.png)
applied mathematics
computaional mathematics
numerical analysis
perturbation analysis
round-off errors
* Total i10 Index Rankings
World Ranking
1,111,690
Country Ranking
1,381
Institution Ranking
65
Milen Borisov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
![](https://cdn.adscientificindex.com/logos/28324.png)
Mathematical modeling of biological processes
* Total i10 Index Rankings
World Ranking
1,139,611
Country Ranking
1,439
Institution Ranking
70
Silvia Boumova
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
3
0.500
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* Total i10 Index Rankings
World Ranking
1,147,775
Country Ranking
1,479
Institution Ranking
80
Ivan Derzhanski
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
1
0.167
![](https://cdn.adscientificindex.com/logos/28324.png)
linguistic problems
aspectology
semantics
morphology
writing systems
* Total i10 Index Rankings
World Ranking
1,219,154
Country Ranking
1,626
Institution Ranking
94
K Sotirova-Valkova
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
2
0.400
![](https://cdn.adscientificindex.com/logos/28324.png)
Heritage Studies
Museum Informatics
Digital Humanities
* Total i10 Index Rankings
World Ranking
1,225,040
Country Ranking
1,649
Institution Ranking
96
Димитринка Владева
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
0
0.000
* Total i10 Index Rankings
World Ranking
1,225,690
Country Ranking
1,651
Institution Ranking
97
Strashimir Popvassilev
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
0
0.000
![](https://cdn.adscientificindex.com/logos/28324.png)
general topology
set theory
combinatorial geometry
* Total i10 Index Rankings
World Ranking
1,444,210
Country Ranking
2,076
Institution Ranking
132
Nikolay Ikonomov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
![](https://cdn.adscientificindex.com/logos/28324.png)
complex approximations
Pade approximation
* Total i10 Index Rankings
World Ranking
1,585,617
Country Ranking
2,343
Institution Ranking
150
Vladimir Sotirov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
1
0.500
* Total i10 Index Rankings
World Ranking
1,607,318
Country Ranking
2,429
Institution Ranking
154
Tatyana Ivanova
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
0
0.000
* Total i10 Index Rankings
World Ranking
1,633,564
Country Ranking
2,522
Institution Ranking
165
Nikolay Nikolov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
![](https://cdn.adscientificindex.com/logos/28324.png)
Statistics
Rank data
Statistical modeling
Reliability
* Total i10 Index Rankings
World Ranking
1,826,785
Country Ranking
2,813
Institution Ranking
171
Ognian Kassabov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 Index Rankings
World Ranking
1,828,864
Country Ranking
2,841
Institution Ranking
173
Neli Maneva
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 Index Rankings
World Ranking
1,843,803
Country Ranking
2,929
Institution Ranking
179
Veselin Vavrek
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 Index Rankings
World Ranking
1,851,983
Country Ranking
2,977
Institution Ranking
181
Teodor Boyadzhiev
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
![](https://cdn.adscientificindex.com/logos/28324.png)
Machine Learning
Bayesian Analysis
* Total i10 Index Rankings
World Ranking
1,875,901
Country Ranking
3,043
Institution Ranking
184
Galina Momcheva
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
![](https://cdn.adscientificindex.com/logos/28324.png)
Programming
Algorithms
Biomedical Image Analysis
ANN
Data Science
* Total i10 Index Rankings
World Ranking
1,878,655
Country Ranking
3,065
Institution Ranking
187
Todor Branzov
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
![](https://cdn.adscientificindex.com/logos/28324.png)
Software Engineering
Software Information Systems
Virtual Communities
Project Management
Crowd-sourcing
* Total i10 Index Rankings
World Ranking
1,888,897
Country Ranking
3,144
Institution Ranking
197
Dimitar Slavchev
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
![](https://cdn.adscientificindex.com/logos/28324.png)
Applied mathematics
hierarchical methods
soving dense structured systems of linear equations