Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
CANNABIS AND SCHIZOPHRENIA A Longitudinal Study of Swedish Conscripts
1987765 citationsSven Andréasson, Peter Allebeck et al.The Lancetprofile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
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This map shows the geographic impact of Ulf Rydberg'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 Ulf Rydberg with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ulf Rydberg more than expected).
This network shows the impact of papers produced by Ulf Rydberg. 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 Ulf Rydberg. The network helps show where Ulf Rydberg may publish in the future.
Co-authorship network of co-authors of Ulf Rydberg
This figure shows the co-authorship network connecting the top 25 collaborators of Ulf Rydberg.
A scholar is included among the top collaborators of Ulf Rydberg 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 Ulf Rydberg. Ulf Rydberg is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Kühlhorn, Eckart, et al.. (1999). [Alcohol and drug use among medical students 1995: more than every tenth male student had hazardous alcohol drinking habits].. PubMed. 96(28-29). 3253–8.6 indexed citations
6.
Olsson, Ulf, et al.. (1999). Serum sialic acid in random sample of the general population. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari).
Bergman, Ulf, et al.. (1988). [Fight against drug abuse. The decision of the Judiciary Ombudsmen protects the rights of the patients].. PubMed. 85(13). 1175–8.
14.
Andréasson, Sven, et al.. (1987). CANNABIS AND SCHIZOPHRENIA A Longitudinal Study of Swedish Conscripts. The Lancet. 330(8574). 1483–1486.765 indexed citations breakdown →
15.
Olsson, O., et al.. (1980). Effects of ethanol on the developing rat. II. Coordination as measured by the tilting-plane test.. PubMed. 58(3). 164–8.60 indexed citations
16.
Rydberg, Ulf. (1974). [The role of alcohol in therapy].. PubMed. 71(14). 1415–7.1 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.