Citations per year, relative to R. Karl Zipf R. Karl Zipf (= 1×)
peers
Michael J. Sapko
Countries citing papers authored by R. Karl Zipf
Since
Specialization
Citations
This map shows the geographic impact of R. Karl Zipf'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 R. Karl Zipf with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. Karl Zipf more than expected).
This network shows the impact of papers produced by R. Karl Zipf. 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 R. Karl Zipf. The network helps show where R. Karl Zipf may publish in the future.
Co-authorship network of co-authors of R. Karl Zipf
This figure shows the co-authorship network connecting the top 25 collaborators of R. Karl Zipf.
A scholar is included among the top collaborators of R. Karl Zipf 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 R. Karl Zipf. R. Karl Zipf is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Brune, Jürgen F., et al.. (2015). A Critical Look at Longwall Bleeder Ventilation.1 indexed citations
2.
Brune, Jürgen F., et al.. (2015). Gob Ventilation Boreholes Design Optimization for Longwall Coal Mining.1 indexed citations
Zipf, R. Karl. (1993). Stress Analysis in Coal Mines with MULSIM/NL.
15.
Zipf, R. Karl. (1992). MULSIM/NL application and practitioner's manual. International Conference on Multimedia Information Networking and Security. 9322.7 indexed citations
16.
Zipf, R. Karl. (1992). MULSIM/NL Theoretical and Programmer's Manual.6 indexed citations
17.
Zipf, R. Karl & Z.T. Bieniawski. (1990). Mixed-mode fracture toughness testing of coal. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts. 27(6). 479–493.32 indexed citations
Zipf, R. Karl & Z.T. Bieniawski. (1986). Mixed Mode Testing for Fracture Toughness of Coal Based on Critical-Energy-Density.9 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.