This map shows the geographic impact of I Freier'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 I Freier with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites I Freier more than expected).
This network shows the impact of papers produced by I Freier. 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 I Freier. The network helps show where I Freier may publish in the future.
Co-authorship network of co-authors of I Freier
This figure shows the co-authorship network connecting the top 25 collaborators of I Freier.
A scholar is included among the top collaborators of I Freier 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 I Freier. I Freier is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ewers, U., et al.. (1996). [Lead and cadmium content in deciduous teeth of children of Stolberg and other cities of North-Rhine-Westphalia: a chronological trend 1968-1993].. PubMed. 198(4). 318–30.5 indexed citations
3.
Begerow, Jutta, et al.. (1996). Internal and external tetrachloroethene exposure of persons living in differently polluted areas of Northrhine-Westphalia (Germany).. PubMed. 198(5). 394–406.2 indexed citations
Ewers, U., et al.. (1993). [Heavy metal pollution of soil and garden products of Stolberg home gardens and lead and cadmium pollution of small farms in Stolberg].. PubMed. 55(6). 318–25.13 indexed citations
7.
Ewers, U., et al.. (1992). [Mercury exposure of the population. IV. Mercury exposure of male dentists, female dentists and dental aides].. PubMed. 193(4). 318–28.1 indexed citations
8.
Ewers, U., et al.. (1992). [The mercury exposure of the population. III. Mercury mobilisation by DMPS (Dimaval) in subjects with and without amalgam fillings].. PubMed. 192(5). 447–54.6 indexed citations
Ewers, U., et al.. (1990). [Lead and cadmium content in deciduous incisors of children from Duisburg and Gummersbach--developing trend 1976-1988].. PubMed. 189(4). 333–51.6 indexed citations
11.
Ewers, U., A. Brockhaus, R. Dolgner, et al.. (1990). [Blood lead and blood cadmium concentrations in 55-66-year-old women fron different areas of Nordrhein-Westfalen--chronological trends during 1982-1988].. PubMed. 189(5). 405–18.1 indexed citations
12.
Ewers, U., et al.. (1990). [Exposure to mercury in the population. II. Mercury release from amalgam fillings].. PubMed. 190(4). 325–34.4 indexed citations
13.
Ewers, U., et al.. (1990). [Exposure to mercury in the population. I. Mercury concentrations in the urine of normal subjects].. PubMed. 190(4). 315–24.3 indexed citations
Ewers, U., R. Dolgner, A. Brockhaus, et al.. (1984). [Studies of lead and cadmium exposure in children and adolescents in an area exposed to heavy metals (Stolberg)].. PubMed. 46(5). 231–6.3 indexed citations
Brockhaus, A., R. Dolgner, U. Ewers, et al.. (1980). Excessive thallium absorption among a population living near a thallium emitting cement plant.. PubMed. 8. 565–8.4 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.