This map shows the geographic impact of Erwin Köhler'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 Erwin Köhler with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Erwin Köhler more than expected).
This network shows the impact of papers produced by Erwin Köhler. 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 Erwin Köhler. The network helps show where Erwin Köhler may publish in the future.
Co-authorship network of co-authors of Erwin Köhler
This figure shows the co-authorship network connecting the top 25 collaborators of Erwin Köhler.
A scholar is included among the top collaborators of Erwin Köhler 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 Erwin Köhler. Erwin Köhler is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Donavan, Paul R., et al.. (2010). Tire/Pavement Noise Levels Related To Roadway Friction Improvement. Transportation Research Board 89th Annual MeetingTransportation Research Board.2 indexed citations
Bendtsen, H, Qing Lu, & Erwin Köhler. (2009). Acoustic Aging of Asphalt Pavements: A Californian /Danish Comparison. eScholarship (California Digital Library).13 indexed citations
8.
Jones, David, John Harvey, & Erwin Köhler. (2008). Summary Report on the Evaluation of Rigid Pavement Long-life Strategies. eScholarship (California Digital Library).1 indexed citations
9.
Köhler, Erwin, et al.. (2008). Construction and Preliminary HVS Tests of Pre-Cast Concrete Pavement Slabs. eScholarship (California Digital Library).1 indexed citations
10.
Öngel, Aybike, et al.. (2008). Summary Report: Investigation of Noise, Durability, Permeability, and Friction Performance Trends for Asphalt Pavement Surface Types: First- and Second-Year Results. eScholarship (California Digital Library).9 indexed citations
11.
Köhler, Erwin, et al.. (2008). Evaluation of precast concrete slabs using a heavy vehicle simulator.1 indexed citations
12.
Nelson, James T., et al.. (2008). Acoustical Absorption of Porous Pavement. Transportation Research Record Journal of the Transportation Research Board. 2058(1). 125–132.23 indexed citations
Köhler, Erwin, et al.. (2007). Measurement and Variability of Coefficient of Thermal Expansion for Concrete Pavements. Transportation Research Board 86th Annual MeetingTransportation Research Board.8 indexed citations
17.
Köhler, Erwin, et al.. (2007). Interim Assessment of Expected Structural Life of Pre-Cast Concrete Pavement Slabs with HVS Testing.1 indexed citations
18.
Köhler, Erwin & Jeffery R. Roesler. (2006). Accelerated Pavement Testing of Extended Life Continuously Reinforced Concrete Pavement Sections.9 indexed citations
19.
Köhler, Erwin, et al.. (2005). Flexural Fatigue Life of Hydraulic Cement Concrete Beams.1 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.