This map shows the geographic impact of R Sudik'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 R Sudik with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R Sudik more than expected).
This network shows the impact of papers produced by R Sudik. 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 R Sudik. The network helps show where R Sudik may publish in the future.
Co-authorship network of co-authors of R Sudik
This figure shows the co-authorship network connecting the top 25 collaborators of R Sudik.
A scholar is included among the top collaborators of R Sudik 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 R Sudik. R Sudik is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Nawroth, Frank, et al.. (2000). [Is there an increase of serum antisperm antibodies following surgery in the cervical transformation zone for cervical intraepithelial neoplasia (CIN)?].. PubMed. 122(3). 165–8.2 indexed citations
7.
Nawroth, Frank & R Sudik. (1999). [Pregnancy and hormone replacement therapy in a patient with resistant ovary syndrome].. PubMed. 121(5). 255–7.5 indexed citations
8.
Winkler, Ulrich, E. Daume, R Sudik, et al.. (1999). A comparative study of the hemostatic effects of two monophasic oral contraceptives containing 30 mu(g) ethinylestradiol and either 2 mg chlormadinone acetate or 150 mu(g) desogestrel.. PubMed. 4(3). 145–54.20 indexed citations
Sudik, R. (1995). [Extrauterine pregnancy after hormonal postcoital contraception].. PubMed. 117(6). 320–2.2 indexed citations
13.
Sudik, R, et al.. (1989). [The hormonal micromilieu and oocyte status in the stimulated in vitro fertilization cycle].. PubMed. 111(9). 587–603.1 indexed citations
14.
Sudik, R, et al.. (1987). [Hormone profile and follicle development in ovarian stimulation treatment for in vitro fertilization. 1. FSH and LH profiles].. PubMed. 109(24). 1478–92.1 indexed citations
15.
Sudik, R, et al.. (1984). [Ectopic pregnancy following in vitro fertilization and embryo transfer].. PubMed. 106(22). 1495–9.5 indexed citations
16.
Sudik, R, et al.. (1984). [Problems of ethics in research and practice in reproduction medicine].. PubMed. 106(22). 1473–82.1 indexed citations
17.
Sudik, R. (1982). [Results of an ultrasonic screening programme in the detection of intrauterine growth retardation].. PubMed. 186(3). 119–24.2 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.