Holger Siemann

8 papers and 533 indexed citations i.

About

Holger Siemann is a scholar working on Clinical Psychology, Toxicology and Epidemiology. According to data from OpenAlex, Holger Siemann has authored 8 papers receiving a total of 533 indexed citations (citations by other indexed papers that have themselves been cited), including 3 papers in Clinical Psychology, 3 papers in Toxicology and 2 papers in Epidemiology. Recurrent topics in Holger Siemann’s work include Forensic Toxicology and Drug Analysis (3 papers), Psychedelics and Drug Studies (3 papers) and Hepatitis C virus research (2 papers). Holger Siemann is often cited by papers focused on Forensic Toxicology and Drug Analysis (3 papers), Psychedelics and Drug Studies (3 papers) and Hepatitis C virus research (2 papers). Holger Siemann collaborates with scholars based in Germany, United Kingdom and Spain. Holger Siemann's co-authors include Norbert Scherbaum, Fabrizio Schifano, Paolo Deluca, Ornella Corazza, Marta Torrens, Zoe Davey, Magı́ Farré, Zsolt Demetrovics, Suzanne Fergus and John Corkery and has published in prestigious journals such as Journal of Hepatology, Psychopharmacology and Progress in Neuro-Psychopharmacology and Biological Psychiatry.

In The Last Decade

Co-authorship network of co-authors of Holger Siemann i

Fields of papers citing papers by Holger Siemann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Holger Siemann. 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 Holger Siemann. The network helps show where Holger Siemann may publish in the future.

Countries citing papers authored by Holger Siemann

Since Specialization
Citations

This map shows the geographic impact of Holger Siemann'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 Holger Siemann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Holger Siemann more than expected).

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.

Explore authors with similar magnitude of impact

Rankless by CCL
2025