J. Hammerstein

1.9k total citations
98 papers, 1.3k citations indexed

About

J. Hammerstein is a scholar working on Reproductive Medicine, Endocrinology, Diabetes and Metabolism and Public Health, Environmental and Occupational Health. According to data from OpenAlex, J. Hammerstein has authored 98 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 38 papers in Reproductive Medicine, 33 papers in Endocrinology, Diabetes and Metabolism and 21 papers in Public Health, Environmental and Occupational Health. Recurrent topics in J. Hammerstein's work include Ovarian function and disorders (32 papers), Hormonal and reproductive studies (20 papers) and Estrogen and related hormone effects (15 papers). J. Hammerstein is often cited by papers focused on Ovarian function and disorders (32 papers), Hormonal and reproductive studies (20 papers) and Estrogen and related hormone effects (15 papers). J. Hammerstein collaborates with scholars based in Germany, United States and United Kingdom. J. Hammerstein's co-authors include U. Schwartz, L. Moltz, I. Leo-Roßberg, F. Zielske, J. Meckies, Bernard F. Rice, Kenneth Savard, H. Lübbert, H Pickartz and G. Matthias Ullmann and has published in prestigious journals such as American Journal of Psychiatry, The Journal of Clinical Endocrinology & Metabolism and American Journal of Obstetrics and Gynecology.

In The Last Decade

J. Hammerstein

96 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J. Hammerstein Germany 20 653 411 392 213 210 98 1.3k
T. Rabe Germany 24 642 1.0× 440 1.1× 592 1.5× 351 1.6× 299 1.4× 141 1.9k
M. Breckwoldt Germany 21 676 1.0× 219 0.5× 473 1.2× 274 1.3× 216 1.0× 151 1.4k
Karen D. Bradshaw United States 15 511 0.8× 494 1.2× 246 0.6× 351 1.6× 356 1.7× 36 1.4k
G. Mikhail United States 18 251 0.4× 220 0.5× 139 0.4× 293 1.4× 141 0.7× 32 1.0k
Serge Bélisle Canada 19 467 0.7× 226 0.5× 353 0.9× 142 0.7× 153 0.7× 57 1.1k
C Campagnoli Italy 22 377 0.6× 697 1.7× 370 0.9× 667 3.1× 311 1.5× 58 1.8k
G. Bolelli Italy 17 359 0.5× 350 0.9× 318 0.8× 420 2.0× 208 1.0× 44 1.3k
Milan R. Henzl United States 21 952 1.5× 106 0.3× 413 1.1× 218 1.0× 113 0.5× 66 1.5k
I.F. Sommerville United Kingdom 12 261 0.4× 282 0.7× 118 0.3× 168 0.8× 157 0.7× 25 846
Craig A. Winkel United States 28 1.7k 2.5× 359 0.9× 389 1.0× 337 1.6× 277 1.3× 67 2.6k

Countries citing papers authored by J. Hammerstein

Since Specialization
Citations

This map shows the geographic impact of J. Hammerstein'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 J. Hammerstein with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Hammerstein more than expected).

Fields of papers citing papers by J. Hammerstein

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Hammerstein. 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 J. Hammerstein. The network helps show where J. Hammerstein may publish in the future.

Co-authorship network of co-authors of J. Hammerstein

This figure shows the co-authorship network connecting the top 25 collaborators of J. Hammerstein. A scholar is included among the top collaborators of J. Hammerstein 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 J. Hammerstein. J. Hammerstein is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Wellisch, David K., et al.. (1999). Depression and Anxiety Symptoms in Women at High Risk for Breast Cancer: Pilot Study of a Group Intervention. American Journal of Psychiatry. 156(10). 1644–1645. 41 indexed citations
2.
Hammerstein, J., T. Rabe, & B. Runnebaum. (1995). Stellungnahme der Deutschen Gesellschaft für Gynäkologie und Geburtshilfe zum beabsichtigten Widerruf der Zulassung CPA-haltiger Präparate. Gyn�kologisch-geburtshilfliche Rundschau. 35(1). 49–50. 1 indexed citations
3.
4.
Back, David, John Power, Ulrich Winkler, et al.. (1993). Pharmacokinetics and protein binding of 3-ketodesogestrel and gestodene in the serum of women during 6 cycles of treatment with two low dose oral contraceptives. Advances in Contraception. 9(4). 319–330. 1 indexed citations
5.
Lübbert, H., I. Leo-Roßberg, & J. Hammerstein. (1992). Effects of ethinyl estradiol on semen quality and various hormonal parameters in a eugonadal male. Fertility and Sterility. 58(3). 603–608. 54 indexed citations
6.
Hammerstein, J.. (1990). Prodrugs: Advantage or disadvantage?. American Journal of Obstetrics and Gynecology. 163(6). 2198–2203. 6 indexed citations
7.
Moltz, L., et al.. (1984). Ovarian and adrenal vein steroids in patients with nonneoplastic hyperandrogenism: selective catheterization findings. Fertility and Sterility. 42(1). 69–75. 42 indexed citations
8.
Moltz, L., et al.. (1984). Ovarian and adrenal vein steroids in seven patients with androgen-secreting ovarian neoplasms: selective catheterization findings. Fertility and Sterility. 42(4). 585–593. 46 indexed citations
9.
Moltz, L., et al.. (1983). A sertoli-leydig cell tumor and pregnancy. Archives of Gynecology and Obstetrics. 233(4). 295–308. 13 indexed citations
10.
Schwartz, U., L. Moltz, Janet Brotherton, & J. Hammerstein. (1983). The diagnostic value of plasma free testosterone in non-tumorous and tumorous hyperandrogenism. Fertility and Sterility. 40(1). 66–72. 5 indexed citations
11.
Hammerstein, J., et al.. (1981). Wirkungsvergleich verschiedener Östrogene an der hypergonadotropen Hypophyse. Archives of Gynecology and Obstetrics. 232(1-4). 648–650. 1 indexed citations
12.
Hammerstein, J.. (1980). Androgenization in women : acne, seborrhoea, androgenetic alopecia and hirsutism : lectures and discussions of a symposium, Berlin, 23rd-24th February 1979. Elsevier eBooks. 1 indexed citations
13.
Koch, Ursula, F. Zielske, & J. Hammerstein. (1975). Nachweis der Spermatozoenascension im weiblichen Genitaltrakt als Routineuntersuchung in der Sterilit�tsdiagnostik. Archives of Gynecology and Obstetrics. 219(1-4). 610–610. 1 indexed citations
14.
Koch, Ursula, et al.. (1975). �ber die Verwendbarkeit von Cyproteronacetat zur Fertilit�tshemmung beim Mann. Morphologische Ver�nderungen und Einfl�sse auf die Spermienmotilit�t. Archives of Gynecology and Obstetrics. 219(1-4). 581–582. 1 indexed citations
15.
Hammerstein, J., et al.. (1973). Antiandrogene. Archives of Gynecology and Obstetrics. 214(1-4). 243–247. 3 indexed citations
16.
Hammerstein, J., et al.. (1973). Methodische Vereinfachungen der radioimmunologischen Bestimmungen von Proteohormonen im Blut. Archives of Gynecology and Obstetrics. 214(1-4). 416–418. 1 indexed citations
17.
18.
Hammerstein, J.. (1965). Die Ausscheidung von Steroiden und Gonadotropinen im anovulatorischen Cyclus der Frau. Archives of Gynecology and Obstetrics. 200(7). 638–658.
19.
Hammerstein, J., et al.. (1963). Bericht �ber 550 Vakuum-Extraktionen unter besonderer Ber�cksichtigung der Mi�erfolge. Archives of Gynecology and Obstetrics. 198(1). 548–553. 2 indexed citations
20.
Hammerstein, J., et al.. (1954). [Case of arrhenoblastoma and intersexualism].. PubMed. 9(28). 652–7.

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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by T. Rabe Breakdown of academic impact, for papers by M. Breckwoldt Breakdown of academic impact, for papers by Karen D. Bradshaw Breakdown of academic impact, for papers by G. Mikhail Breakdown of academic impact, for papers by Serge Bélisle Breakdown of academic impact, for papers by C Campagnoli Breakdown of academic impact, for papers by G. Bolelli Breakdown of academic impact, for papers by Milan R. Henzl Breakdown of academic impact, for papers by I.F. Sommerville Breakdown of academic impact, for papers by Craig A. Winkel
Rankless by CCL
2026