Kolja Freier

99 papers and 2.5k indexed citations
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About

Kolja Freier is a scholar working on Surgery, Otorhinolaryngology and Oncology. According to data from OpenAlex, Kolja Freier has authored 99 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 50 papers in Surgery, 37 papers in Otorhinolaryngology and 34 papers in Oncology. Recurrent topics in Kolja Freier’s work include Head and Neck Cancer Studies (37 papers), Reconstructive Surgery and Microvascular Techniques (19 papers) and Head and Neck Surgical Oncology (19 papers). Kolja Freier is often cited by papers focused on Head and Neck Cancer Studies (37 papers), Reconstructive Surgery and Microvascular Techniques (19 papers) and Head and Neck Surgical Oncology (19 papers). Kolja Freier collaborates with scholars based in Germany, United States and China. Kolja Freier's co-authors include Christof Hofele, Jürgen Hoffmann, Christa Flechtenmacher, Peter Lichter, Stefan Joos, Oliver C. Thiele, Michael Engel, Christian Freudlsperger, Robin Seeberger and Dominik Horn and has published in prestigious journals such as PLoS ONE, Clinical Cancer Research and International Journal of Molecular Sciences.

In The Last Decade

Co-authorship network of co-authors of Kolja Freier

This figure shows the co-authorship network connecting the top 25 collaborators of Kolja Freier. A scholar is included among the top collaborators of Kolja 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 Kolja Freier. Kolja Freier is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

Fields of papers citing papers by Kolja Freier

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Kolja Freier

Since Specialization
Citations

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

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2026