This map shows the geographic impact of J Sjögren'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 Sjögren with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J Sjögren more than expected).
This network shows the impact of papers produced by J Sjögren. 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 Sjögren. The network helps show where J Sjögren may publish in the future.
Co-authorship network of co-authors of J Sjögren
This figure shows the co-authorship network connecting the top 25 collaborators of J Sjögren.
A scholar is included among the top collaborators of J Sjögren 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 Sjögren. J Sjögren is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ragnarsson, Gert & J Sjögren. (1984). Compressibility and tablet properties of two polymorphs of metoprolol tartrate.. PubMed. 21(6). 321–30.12 indexed citations
7.
Ragnarsson, Gert & J Sjögren. (1983). Tablet compaction to a constant load. International Journal of Pharmaceutics. 16(3). 349–351.3 indexed citations
Graffner, Christina, G. Johnsson, & J Sjögren. (1974). Comparative absorption and pharmacokinetic studies on proxyphylline in ordinary and slow release tablets.. PubMed. 11(2). 125–32.4 indexed citations
17.
Sjögren, J. (1971). Studies on a sustained release principle based on an inert plastic matrix.. PubMed. 8(3). 153–68.15 indexed citations
18.
Johansson, Roland S., et al.. (1971). Absorption of alprenolol in man from tablets with different rates of release.. PubMed. 8(1). 59–70.38 indexed citations
19.
Graffner, Christina & J Sjögren. (1971). Potassium absorption from sustained release tablets.. PubMed. 8(1). 13–8.2 indexed citations
20.
Amdisen, A. & J Sjögren. (1968). Lithium absorption from sustained-release tablets (Duretter).. PubMed. 5(5). 465–72.26 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.