N Kolev

472 total citations
49 papers, 219 citations indexed

About

N Kolev is a scholar working on Surgery, Cardiology and Cardiovascular Medicine and Pulmonary and Respiratory Medicine. According to data from OpenAlex, N Kolev has authored 49 papers receiving a total of 219 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Surgery, 17 papers in Cardiology and Cardiovascular Medicine and 14 papers in Pulmonary and Respiratory Medicine. Recurrent topics in N Kolev's work include Cardiovascular Function and Risk Factors (12 papers), Urologic and reproductive health conditions (9 papers) and Cardiac Valve Diseases and Treatments (7 papers). N Kolev is often cited by papers focused on Cardiovascular Function and Risk Factors (12 papers), Urologic and reproductive health conditions (9 papers) and Cardiac Valve Diseases and Treatments (7 papers). N Kolev collaborates with scholars based in Bulgaria, Austria and United Kingdom. N Kolev's co-authors include M. Zimpfer, Justiaan Swanevelder, Fabio Guarracino, Rainer Brase, Joost M. van der Maaten, Mohamad G. Abiad, Michele Oppizzi, Christian K. Spiss, Tilo Hartmann and G. Huemer and has published in prestigious journals such as SHILAP Revista de lepidopterología, European Heart Journal and Anesthesiology.

In The Last Decade

N Kolev

46 papers receiving 205 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
N Kolev Bulgaria	7	117	103	72	51	40	49	219
Keng Sin Ng Singapore	9	53 0.5×	78 0.8×	77 1.1×	36 0.7×	19 0.5×	20	236
Marta Leone Italy	10	74 0.6×	188 1.8×	108 1.5×	26 0.5×	31 0.8×	15	295
Maria Coppola Italy	8	46 0.4×	58 0.6×	89 1.2×	24 0.5×	34 0.8×	19	219
Lukas M. Löffel Switzerland	10	269 2.3×	181 1.8×	76 1.1×	29 0.6×	59 1.5×	21	316
Mohamed F. Ibrahim Saudi Arabia	8	126 1.1×	199 1.9×	74 1.0×	17 0.3×	20 0.5×	22	284
Geneviève Trotteur Belgium	6	221 1.9×	211 2.0×	46 0.6×	23 0.5×	197 4.9×	8	414
Michael J. DaValle United States	6	207 1.8×	204 2.0×	113 1.6×	58 1.1×	27 0.7×	8	360
Samira Saady Morhy Brazil	11	119 1.0×	207 2.0×	52 0.7×	82 1.6×	90 2.3×	50	337
Luca Conte Italy	9	78 0.7×	247 2.4×	60 0.8×	31 0.6×	49 1.2×	30	315
Christian Reiner Germany	7	38 0.3×	318 3.1×	53 0.7×	57 1.1×	30 0.8×	11	418

Countries citing papers authored by N Kolev

Since Specialization

Citations

This map shows the geographic impact of N Kolev's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by N Kolev with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites N Kolev more than expected).

Fields of papers citing papers by N Kolev

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by N Kolev. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by N Kolev. The network helps show where N Kolev may publish in the future.

Co-authorship network of co-authors of N Kolev

This figure shows the co-authorship network connecting the top 25 collaborators of N Kolev. A scholar is included among the top collaborators of N Kolev based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with N Kolev. N Kolev is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Kolev, N, et al.. (2021). A rare case of isolated lung metastasis in the kidney. Urology Case Reports. 37. 101616–101616. 1 indexed citations

Kolev, N, et al.. (2021). Subcutaneous nephrovesical bypass in a patient with advanced prostate cancer. Urology Case Reports. 38. 101656–101656. 1 indexed citations

Kolev, N, et al.. (2020). A rare case of huge villous adenoma of the renal pelvis deforming the abdominal wall. Urology Case Reports. 31. 101183–101183. 4 indexed citations

Kolev, N, et al.. (2020). A rare case of extramedullary hematopoiesis in adrenal mass. Urology Case Reports. 30. 101120–101120. 4 indexed citations

Kolev, N, et al.. (2020). Low-intensity extracorporeal shockwave therapy in the treatment of erectile dysfunction after penile trauma. Urology Case Reports. 30. 101133–101133. 1 indexed citations

Kolev, N, et al.. (2020). Successful in vitro fertilization in a 30 years old man with bilateral abdominal cryptorchidism. Urology Case Reports. 31. 101173–101173. 1 indexed citations

Kolev, N, et al.. (2019). A rare clinical case of penile gangrene in a patient with chronic renal failure and diabetes mellitus. Urology Case Reports. 23. 108–109. 3 indexed citations

Kolev, N, et al.. (2019). Late results of bilateral scrotal flap. Urology Case Reports. 27. 100920–100920. 3 indexed citations

Kolev, N, et al.. (2019). Management and diagnosis of Nutcracker syndrome-a case report. Urology Case Reports. 29. 101103–101103. 6 indexed citations

10.

Kolev, N, et al.. (2019). Management of Leydig cell tumors of the testis-a case report. Urology Case Reports. 28. 101064–101064. 1 indexed citations

11.

Kolev, N, et al.. (2019). Torsion of the testis with perineal ectopy. Urology Case Reports. 29. 101087–101087. 5 indexed citations

12.

Kolev, N, et al.. (2019). Classical form of Kaposi sarcoma localized in penis. Urology Case Reports. 24. 100856–100856. 2 indexed citations

13.

Kolev, N, et al.. (2019). A rare case of Bellini duct carcinoma. Urology Case Reports. 25. 100899–100899. 3 indexed citations

14.

Kolev, N, et al.. (2016). Laparoscopic Surgery for Adrenal Tumors. Scripta Scientifica Medica. 48. 59. 1 indexed citations

15.

Kolev, N, et al.. (2014). Validation of Nomograms Predicting Lymph Node Involvement in Patients with Prostate Cancer Undergoing Extended Pelvic Lymph Node Dissection. Urologia Internationalis. 92(3). 300–305. 21 indexed citations

16.

Hartmann, Tilo, N Kolev, & M. Zimpfer. (1997). A rare presentation of thoracic aortic dissection as detected by transoesophageal echocardiography. European Journal of Anaesthesiology. 14(6). 655–658. 2 indexed citations

17.

Kolev, N, Gerald Ihra, Justiaan Swanevelder, et al.. (1997). Biplane transoesophageal echocardiographic detection of myocardial ischaemia in patients with coronary artery disease undergoing non-cardiac surgery: segmental wall motion vs. electrocardiography and haemodynamic performance. European Journal of Anaesthesiology. 14(4). 412–420. 13 indexed citations

18.

Kolev, N, et al.. (1996). A new scoring system, using Doppler transmitral diastolic measurement, identifies transient myocardial ischaemia. European Journal of Anaesthesiology. 13(1). 49–55. 2 indexed citations

19.

Zimpfer, M., N Kolev, & Andy Black. (1996). Echocardiographic assessment of diastolic function. European Journal of Anaesthesiology. 13(5). 436–444. 2 indexed citations

20.

Huemer, G., N Kolev, & M. Zimpfer. (1996). Transoesophageal echocardiographic assessment of mitral and aortic valve function during cardiopulmonary resuscitation. European Journal of Anaesthesiology. 13(6). 622–626. 7 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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