This map shows the geographic impact of Hulka Jf'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 Hulka Jf with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hulka Jf more than expected).
This network shows the impact of papers produced by Hulka Jf. 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 Hulka Jf. The network helps show where Hulka Jf may publish in the future.
Co-authorship network of co-authors of Hulka Jf
This figure shows the co-authorship network connecting the top 25 collaborators of Hulka Jf.
A scholar is included among the top collaborators of Hulka Jf 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 Hulka Jf. Hulka Jf 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.
Hb, Peterson, et al.. (1993). Laparoscopic sterilization. American Association of Gynecologic Laparoscopists 1991 membership survey.. PubMed. 38(8). 574–6.30 indexed citations
2.
Jf, Hulka, Peterson Hb, & Phillips Jm. (1990). American Association of Gynecologic Laparoscopists' 1988 membership survey on laparoscopic sterilization.. PubMed. 35(6). 584–6.19 indexed citations
3.
Jf, Hulka, Peterson Hb, & Phillips Jm. (1990). American Association of Gynecologic Laparoscopists 1988 Membership Survey on Laparoscopic Sterilization.. PubMed. 112(24). 1501–4.11 indexed citations
4.
Hb, Peterson, Hulka Jf, & Phillips Jm. (1990). American Association of Gynecologic Laparoscopists' 1988 membership survey on operative hysteroscopy.. PubMed. 35(6). 587–1.117 indexed citations
Jf, Hulka, Peterson Hb, M. Surrey, John I. Fishburne, & Phillips Jm. (1987). American Association of Gynecologic Laparoscopists' 1985 membership survey.. PubMed. 32(10). 732–5.5 indexed citations
7.
Jm, Phillips, Hulka Jf, & Peterson Hb. (1984). American Association of Gynecologic Laparoscopists' 1982 membership survey.. PubMed. 29(8). 592–4.50 indexed citations
8.
Copeland, Carol E., et al.. (1983). Direct trocar insertion at laparoscopy: an evaluation.. PubMed. 62(5). 655–9.60 indexed citations
9.
Williams, Preston, et al.. (1983). Midtrimester pregnancy termination: a study of the cost effectiveness of dilation and evacuation in a free-standing facility.. PubMed. 44(9). 549–51.2 indexed citations
10.
Jf, Hulka. (1980). Complications of laparoscopy.. PubMed. 4(1). 1–63.15 indexed citations
11.
Jf, Hulka. (1978). Current status of the reversibility of sterilization.. PubMed. 10(5). 1–2.4 indexed citations
12.
Jf, Hulka, et al.. (1976). Tubal healing following laparoscopic electrocoagulation.. PubMed. 16(3). 129–34.2 indexed citations
13.
Jf, Hulka, et al.. (1974). Spring clip tubal sterilization.. PubMed. 44(3). 449–54.8 indexed citations
14.
Jf, Hulka. (1973). Regional teaching of laparoscopy.. PubMed. 10(5). 243–4.1 indexed citations
15.
Jf, Hulka, et al.. (1973). An outpatient program for laparoscopic sterilization.. PubMed. 41(5). 681–4.5 indexed citations
16.
Jf, Hulka, et al.. (1971). Tubal occlusion: a comparative study.. PubMed. 15(4). 226–41.10 indexed citations
17.
Jf, Hulka, et al.. (1971). Infertility associated with induced local antibody secretion against sperm in the bovine uterine cervix.. PubMed. 16(4). 195–9.8 indexed citations
18.
Jf, Hulka. (1968). How much does family planning cost?. PubMed. 29(4). 147–50.1 indexed citations
19.
Jf, Hulka, et al.. (1965). OBSTETRIC MORTALITY: A 26 YEAR SURVEY.. PubMed. 25. 217–22.1 indexed citations
20.
Jf, Hulka. (1964). EFFECTIVENESS OF POLYVALENT INFLUENZA VACCINE IN PREGNANCY. REPORT OF A CONTROLLED STUDY DURING AN OUTBREAK OF ASIAN INFLUENZA.. PubMed. 23. 830–7.36 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.