This map shows the geographic impact of J. J. Leng'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. J. Leng with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. J. Leng more than expected).
This network shows the impact of papers produced by J. J. Leng. 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. J. Leng. The network helps show where J. J. Leng may publish in the future.
Co-authorship network of co-authors of J. J. Leng
This figure shows the co-authorship network connecting the top 25 collaborators of J. J. Leng.
A scholar is included among the top collaborators of J. J. Leng 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. J. Leng. J. J. Leng is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Brun, J.-L., Claude Billeaud, Frédéric Guyon, et al.. (2000). [Maternal transport to the Bordeaux University Hospital: a retrospective study of 263 cases (1996-1998)].. PubMed. 29(4). 414–22.10 indexed citations
Hocké, Claude, et al.. (1994). [Evaluation of 3 diagnostic methods in premature rupture of membranes: diamine-oxidase assay, alpha-fetoprotein assay, colorimetric method evaluating the pH].. PubMed. 89(3). 123–8.3 indexed citations
11.
Closse, Christèle, et al.. (1994). [Placental penetration of cefpirome (HR 810): study of fetal concentrations after in vitro infusions of human placenta at term].. PubMed. 42(4). 297–304.2 indexed citations
Leng, J. J., et al.. (1992). [Induction in the scarred uterus].. PubMed. 87(4). 188–90.2 indexed citations
14.
Janky, Eustase, et al.. (1990). [Thrombophlebitis of the ovarian veins. A case report. Review of the literature].. PubMed. 85(11). 615–7.2 indexed citations
15.
Mascarel, A. de, Patrick Michenet, J.P. Merlio, et al.. (1989). [Isolated necrotizing angiitis of the cervix uteri. Apropos of a case].. PubMed. 18(6). 721–3.1 indexed citations
16.
Saura, Robert, et al.. (1988). [Placentocentesis, a new technic in the prenatal diagnosis of chromosome aberrations in the 3d trimester. A preliminary study apropos of 5 cases].. PubMed. 17(3). 343–5.1 indexed citations
17.
Serville, F, et al.. (1987). [Prenatal echographic diagnosis of iniencephaly. Apropos of a case].. PubMed. 16(1). 85–9.1 indexed citations
18.
Guibert, Sylvain, et al.. (1985). [Transplacental transfer of 5 antibiotics by in vitro human placental perfusion].. PubMed. 33(5). 368–72.6 indexed citations
Greenblatt, Robert B. & J. J. Leng. (1972). Factors Influencing Sexual Behavior*. Journal of the American Geriatrics Society. 20(2). 49–54.8 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.