Citation Rankings
Highly Cited Researchers
Medical University Sofia 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 Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
allergology
asthma
COPD
clinical immunology
urticaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,950
8,963
0.374
* Total Citation Counts Rankings
Ranking Based On Selection :2
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,025
12,061
0.669
* Total Citation Counts Rankings
Ranking Based On Selection :3
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,672
6,148
0.576
* Total Citation Counts Rankings
Ranking Based On Selection :4
coordination chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,680
2,885
0.376
* Total Citation Counts Rankings
Ranking Based On Selection :5
Anticancer agents
Phytopharmacology
Multidrug resistance
Drug interactions
Antimicrobials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,436
2,049
0.462
* Total Citation Counts Rankings
Ranking Based On Selection :6
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,131
2,359
0.571
* Total Citation Counts Rankings
Ranking Based On Selection :7
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,967
835
0.210
* Total Citation Counts Rankings
Ranking Based On Selection :8
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,407
1,056
0.439
* Total Citation Counts Rankings
Ranking Based On Selection :9
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,918
1,883
0.982
* Total Citation Counts Rankings
Ranking Based On Selection :10
culture
psychopathology
psychosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,916
831
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :11
Endocrinology
Thyroid
Parathyroid
Metabolic bone disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,806
1,024
0.567
* Total Citation Counts Rankings
Ranking Based On Selection :12
Toxicology
Drug metabolism
Hepatoprotection
Neuroprotection
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,592
1,256
0.789
* Total Citation Counts Rankings
Ranking Based On Selection :13
pharmacognosy
phytochemistry
NMR
LC-MS
GC-MS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,507
836
0.555
* Total Citation Counts Rankings
Ranking Based On Selection :14
Allergy & Clinical Immunology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,342
768
0.572
* Total Citation Counts Rankings
Ranking Based On Selection :15
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,204
422
0.350
* Total Citation Counts Rankings
Ranking Based On Selection :16
adult stem cells
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,093
463
0.424
* Total Citation Counts Rankings
Ranking Based On Selection :17
Pollination Ecology
Plant Breeding Systems
Invasive plants
Ethnobotany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,078
772
0.716
* Total Citation Counts Rankings
Ranking Based On Selection :18
neurology
neurosciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,035
856
0.827
* Total Citation Counts Rankings
Ranking Based On Selection :19
Gastroenterology
IBD
Endoscopy
Bile acid malabsorption
Microscopic colitis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
988
988
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :20
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
977
621
0.636
* Total Citation Counts Rankings
Ranking Based On Selection :21
endocrinology
prediabetes
diabetes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
845
593
0.702
* Total Citation Counts Rankings
Ranking Based On Selection :22
drug metabolism
drug toxicity
oxidative stress
drug interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
841
598
0.711
* Total Citation Counts Rankings
Ranking Based On Selection :23
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
791
550
0.695
* Total Citation Counts Rankings
Ranking Based On Selection :24
pharmaceutical legislation
pharmacoeconomics
HTA
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
652
456
0.699
* Total Citation Counts Rankings
Ranking Based On Selection :25
natural products
saponins
flavonoids
phytochemistry
chromatography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
642
562
0.875
* Total Citation Counts Rankings
Rankings
30,457
10
1
Ranking Based On Selection: 1
Todor Popov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,950
8,963
0.374
allergology
asthma
COPD
clinical immunology
urticaria
* Total Citation Counts Rankings
Rankings
45,277
16
2
Ranking Based On Selection: 2
Sena Karachanak-Yankova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,025
12,061
0.669
* Total Citation Counts Rankings
Rankings
88,752
27
3
Ranking Based On Selection: 3
Irini Doytchinova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,672
6,148
0.576
* Total Citation Counts Rankings
Rankings
128,951
44
4
Ranking Based On Selection: 4
Irena Kostova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,680
2,885
0.376
coordination chemistry
* Total Citation Counts Rankings
Rankings
223,446
83
5
Ranking Based On Selection: 5
Georgi Momekov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,436
2,049
0.462
Anticancer agents
Phytopharmacology
Multidrug resistance
Drug interactions
Antimicrobials
* Total Citation Counts Rankings
Rankings
238,718
91
6
Ranking Based On Selection: 6
Zdravko Kamenov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,131
2,359
0.571
* Total Citation Counts Rankings
Rankings
247,912
97
7
Ranking Based On Selection: 7
Boris Tenchov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,967
835
0.210
* Total Citation Counts Rankings
Rankings
375,297
185
8
Ranking Based On Selection: 8
Nikolai Lazarov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,407
1,056
0.439
* Total Citation Counts Rankings
Rankings
443,664
256
9
Ranking Based On Selection: 9
Elena Kinova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,918
1,883
0.982
* Total Citation Counts Rankings
Rankings
444,118
257
10
Ranking Based On Selection: 10
Georgi Onchev
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,916
831
0.434
culture
psychopathology
psychosis
* Total Citation Counts Rankings
Rankings
462,946
272
11
Ranking Based On Selection: 11
Alexander Shinkov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,806
1,024
0.567
Endocrinology
Thyroid
Parathyroid
Metabolic bone disease
* Total Citation Counts Rankings
Rankings
504,135
314
12
Ranking Based On Selection: 12
Magdalena Kondeva-Burdina
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,592
1,256
0.789
Toxicology
Drug metabolism
Hepatoprotection
Neuroprotection
* Total Citation Counts Rankings
Rankings
522,853
335
13
Ranking Based On Selection: 13
Paraskev Nedialkov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,507
836
0.555
pharmacognosy
phytochemistry
NMR
LC-MS
GC-MS
* Total Citation Counts Rankings
Rankings
562,158
389
14
Ranking Based On Selection: 14
Maria Staevska
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,342
768
0.572
Allergy & Clinical Immunology
* Total Citation Counts Rankings
Rankings
600,074
431
15
Ranking Based On Selection: 15
Irina Nikolova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,204
422
0.350
* Total Citation Counts Rankings
Rankings
634,609
470
16
Ranking Based On Selection: 16
Nikolay Ishkitiev
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,093
463
0.424
* Total Citation Counts Rankings
Rankings
639,335
480
17
Ranking Based On Selection: 17
Ekaterina Kozuharova|Kozhuharova Kohuzarova Kohazurova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,078
772
0.716
Pollination Ecology
Plant Breeding Systems
Invasive plants
Ethnobotany
* Total Citation Counts Rankings
Rankings
653,925
501
18
Ranking Based On Selection: 18
Dimitar Maslarov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,035
856
0.827
* Total Citation Counts Rankings
Rankings
670,420
522
19
Ranking Based On Selection: 19
Ivan Lyutakov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
988
988
1.000
Gastroenterology
IBD
Endoscopy
Bile acid malabsorption
Microscopic colitis
* Total Citation Counts Rankings
Rankings
674,597
527
20
Ranking Based On Selection: 20
Boycho Landzhov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
977
621
0.636
* Total Citation Counts Rankings
Rankings
726,689
594
21
Ranking Based On Selection: 21
Nevena Chakarova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
845
593
0.702
endocrinology
prediabetes
diabetes
* Total Citation Counts Rankings
Rankings
728,404
599
22
Ranking Based On Selection: 22
Rumiana Simeonova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
841
598
0.711
drug metabolism
drug toxicity
oxidative stress
drug interactions
* Total Citation Counts Rankings
Rankings
750,178
634
23
Ranking Based On Selection: 23
Aleksandrina Vlahova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
791
550
0.695
* Total Citation Counts Rankings
Rankings
816,557
746
24
Ranking Based On Selection: 24
A Savova|Alexandra Tzenova-Savova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
652
456
0.699
pharmaceutical legislation
pharmacoeconomics
HTA
* Total Citation Counts Rankings
Rankings
821,593
753
25
Ranking Based On Selection: 25
Aleksandar Shkondrov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
642
562
0.875
natural products
saponins
flavonoids
phytochemistry
chromatography