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
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 :2
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
215
103
0.479
* Total Citation Counts Rankings
Ranking Based On Selection :3
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40
40
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :4
Cardiology
Cardiovascular Imaging
Heart Failure
Valvular Heart Disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Elena Kinova
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,918
1,883
0.982
Stefan Naydenov
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
215
103
0.479
Petar Kalaydzhiev
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40
40
1.000
Radostina Ilieva
Medical University Sofia
Sofia, Bulgaria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Cardiology
Cardiovascular Imaging
Heart Failure
Valvular Heart Disease