This map shows the geographic impact of P.D. Bergman'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 P.D. Bergman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P.D. Bergman more than expected).
This network shows the impact of papers produced by P.D. Bergman. 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 P.D. Bergman. The network helps show where P.D. Bergman may publish in the future.
Co-authorship network of co-authors of P.D. Bergman
This figure shows the co-authorship network connecting the top 25 collaborators of P.D. Bergman.
A scholar is included among the top collaborators of P.D. Bergman 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 P.D. Bergman. P.D. Bergman is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
17 of 17 papers shown
1.
Boerrigter, Harold, et al.. (2005). OLGA tar removal technology. Proof-of-Concept (PoC) for application in integrated biomass gasification combined heat and power (CHP) systems. TNO Repository.12 indexed citations
2.
Sass, Bruce, et al.. (2002). Interaction of Rock Minerals with Carbon Dioxide and Brine: A Hydrothermal Investigation. University of North Texas Digital Library (University of North Texas).14 indexed citations
3.
Gupta, Neeraj, et al.. (2001). Engineering and Economic Assessment of Carbon Dioxide Sequestration in Saline Formations. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information).22 indexed citations
4.
Sminchak, Joel, et al.. (2001). Issues Related to Seismic Activity Induced by the Injection of CO2 in Deep Saline Aquifers. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information).41 indexed citations
5.
Gupta, Neeraj, Thomas G. Naymik, & P.D. Bergman. (1998). Aquifer disposal of carbon dioxide for greenhouse effect mitigation. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information).
Bergman, P.D., et al.. (1986). A humic acid binder for pelletizing of fine coal. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information).3 indexed citations
14.
Bergman, P.D. & Daniel Bienstock. (1976). Utilization of Western coal for MHD energy conversion.1 indexed citations
15.
Bergman, P.D., et al.. (1973). Economic evaluation of MHD-steam powerplants employing coal gasification. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information).
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.