Citation Rankings
Highly Cited Researchers

Space research and technology institute of BAS Highly Cited Researchers Citation Rankings 2025

Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation IndexUniversities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025

* Total Citation Counts Rankings
Ranking Based On Selection :1
Bulgaria
Dora Pancheva
aeronomy and space physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,512
1,790
0.325
* Total Citation Counts Rankings
Ranking Based On Selection :2
Bulgaria
Tsvetan Dachev
Space Science
Space Radiation Dosimetry
Magnetospheric physics
Radiation belts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,420
694
0.287
* Total Citation Counts Rankings
Ranking Based On Selection :3
Bulgaria
Korneli Grigorov
Thin films deposition and characterization
hard coatings
sensors
microelectronics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
904
296
0.327
* Total Citation Counts Rankings
Ranking Based On Selection :4
Bulgaria
Jordanka Semkova
space radiation
solar-terrestrial physics
measurements
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
768
266
0.346
* Total Citation Counts Rankings
Ranking Based On Selection :5
Bulgaria
Roumen Nedkov
aerospace data
Ecolocal monitoring
GIS
image processing
gps
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
738
493
0.668
* Total Citation Counts Rankings
Ranking Based On Selection :6
Bulgaria
Alexander Gikov
Remote sensing
geomorphology
Landscape dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
459
268
0.584
* Total Citation Counts Rankings
Rankings
181,584
Bulgaria
67
1
Ranking Based On Selection: 1
Dora Pancheva
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,512
1,790
0.325
* Total Citation Counts Rankings
Rankings
373,776
Bulgaria
184
2
Ranking Based On Selection: 2
Tsvetan Dachev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,420
694
0.287
Space Science
Space Radiation Dosimetry
Magnetospheric physics
Radiation belts
* Total Citation Counts Rankings
Rankings
702,836
Bulgaria
557
3
Ranking Based On Selection: 3
Korneli Grigorov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
904
296
0.327
Thin films deposition and characterization
hard coatings
sensors
microelectronics
* Total Citation Counts Rankings
Rankings
760,769
Bulgaria
658
4
Ranking Based On Selection: 4
Jordanka Semkova
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
768
266
0.346
space radiation
solar-terrestrial physics
measurements
* Total Citation Counts Rankings
Rankings
774,424
Bulgaria
676
5
Ranking Based On Selection: 5
Roumen Nedkov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
738
493
0.668
aerospace data
Ecolocal monitoring
GIS
image processing
gps
* Total Citation Counts Rankings
Rankings
936,208
Bulgaria
966
6
Ranking Based On Selection: 6
Alexander Gikov
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
459
268
0.584
Remote sensing
geomorphology
Landscape dynamics