This map shows the geographic impact of Keith Bull'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 Keith Bull with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keith Bull more than expected).
This network shows the impact of papers produced by Keith Bull. 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 Keith Bull. The network helps show where Keith Bull may publish in the future.
Co-authorship network of co-authors of Keith Bull
This figure shows the co-authorship network connecting the top 25 collaborators of Keith Bull.
A scholar is included among the top collaborators of Keith Bull 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 Keith Bull. Keith Bull is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Bull, Keith, et al.. (1995). Exceedances of acidity and nutrient nitrogen critical loads. NERC Open Research Archive (Natural Environment Research Council).3 indexed citations
Bull, Keith. (1993). Development of the critical loads concept and the UN-ECE mapping programme. NERC Open Research Archive (Natural Environment Research Council).5 indexed citations
13.
Battarbee, RW, Tim Allott, H. J. B. Birks, et al.. (1992). Critical loads and acid deposition for UK freshwaters. Interim report to the DoE from the Critical Loads Advisory Group (CLAG) Freshwaters sub-group.. UCL Discovery (University College London).14 indexed citations
Battarbee, RW, et al.. (1992). The distribution of nitrate in the UK surface water and its implication for calculating critical loads: A preliminary assessment.. UCL Discovery (University College London).2 indexed citations
Bull, Keith, et al.. (1988). The use of physical parameters for selecting representative samples of river catchments. Journal of Environmental Management. 27(4). 405–420.1 indexed citations
Bull, Keith. (1986). Heavy metals in water organisms. Environmental Pollution Series A Ecological and Biological. 42(1). 95–95.16 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.