This map shows the geographic impact of M. Schumacher'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 M. Schumacher with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites M. Schumacher more than expected).
This network shows the impact of papers produced by M. Schumacher. 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 M. Schumacher. The network helps show where M. Schumacher may publish in the future.
Co-authorship network of co-authors of M. Schumacher
This figure shows the co-authorship network connecting the top 25 collaborators of M. Schumacher.
A scholar is included among the top collaborators of M. Schumacher 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 M. Schumacher. M. Schumacher is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Feltgen, Nicolas, Thomas Reinhard, A. Kampik, et al.. (2006). [Lysis therapy vs. conservative therapy: randomised and prospective study on the treatment of acute central retinal artery occlusion (EAGLE study)].. Der Ophthalmologe. 103(10). 898–900.2 indexed citations
Kummer, Rüdiger von, Rolf Holle, Erich Hofmann, et al.. (1996). Interobserver agreement in assessing early CT signs of middle cerebral artery infarction.. American Journal of Neuroradiology. 17(9). 1743–8.130 indexed citations
Bien, S., et al.. (1989). Iotrolan, a nonionic dimeric contrast medium in myelography.. PubMed. 128. 158–60.6 indexed citations
18.
Bien, S., H. Friedburg, A. Härders, & M. Schumacher. (1986). Intracerebral cavernous angiomas in magnetic resonance imaging.. PubMed. 369. 79–81.10 indexed citations
19.
Schumacher, M., Peter Stoeter, & K. Voigt. (1979). [Unusual collateral blood supply to the brainstem in multiple extracranial arterial occlusion (author's transl)].. PubMed. 50(12). 767–70.1 indexed citations
20.
Schumacher, M., et al.. (1977). [Fusiform basilar aneurism with symptoms of a basal tumor (author's transl)].. PubMed. 48(12). 688–91.1 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.