William J. Callahan

46 papers and 410 indexed citations i.

About

William J. Callahan is a scholar working on History, Demography and Conservation. According to data from OpenAlex, William J. Callahan has authored 46 papers receiving a total of 410 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in History, 13 papers in Demography and 8 papers in Conservation. Recurrent topics in William J. Callahan’s work include Historical Studies on Spain (14 papers), Historical Studies in Latin America (13 papers) and Historical Art and Architecture Studies (8 papers). William J. Callahan is often cited by papers focused on Historical Studies on Spain (14 papers), Historical Studies in Latin America (13 papers) and Historical Art and Architecture Studies (8 papers). William J. Callahan collaborates with scholars based in Canada, United States and Kazakhstan. William J. Callahan's co-authors include Richard L. Remmele, Sampathkumar Krishnan, Richard Herr, Paul J. Davis, Henry Kamen, D. A. Brading, José Antonio Maravall, B. B. Hicks, J. R. Whetstone and A. Karion and has published in prestigious journals such as Atmospheric chemistry and physics, Journal of Pharmaceutical Sciences and Pharmaceutical Research.

In The Last Decade

Co-authorship network of co-authors of William J. Callahan i

Fields of papers citing papers by William J. Callahan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by William J. Callahan. 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 William J. Callahan. The network helps show where William J. Callahan may publish in the future.

Countries citing papers authored by William J. Callahan

Since Specialization
Citations

This map shows the geographic impact of William J. Callahan'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 William J. Callahan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites William J. Callahan 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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2025