This map shows the geographic impact of F. A. Gray'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 F. A. Gray with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites F. A. Gray more than expected).
This network shows the impact of papers produced by F. A. Gray. 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 F. A. Gray. The network helps show where F. A. Gray may publish in the future.
Co-authorship network of co-authors of F. A. Gray
This figure shows the co-authorship network connecting the top 25 collaborators of F. A. Gray.
A scholar is included among the top collaborators of F. A. Gray 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 F. A. Gray. F. A. Gray is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Smith, Heidi J., F. A. Gray, & David W. Koch. (2004). Reproduction of Heterodera schachtii Schmidt on Resistant Mustard, Radish, and Sugar Beet Cultivars.. PubMed. 36(2). 123–30.19 indexed citations
Gray, F. A., et al.. (1997). Comparative Field Reaction of Sugarbeet and Several Cruciferous Crops to Nacobbus aberrans. Nematropica. 27(2). 221–227.4 indexed citations
Griffin, G. D. & F. A. Gray. (1994). Pathological Relationship of Meloidogyne hapla and Phytophthora megasperma F. Sp. Medicaginis in Twelve Medicago sativa L. Cultivars. Nematropica. 24(1). 35–43.2 indexed citations
12.
Gray, F. A., J. L. Williams, G. D. Griffin, & Ted Wilson. (1994). Distribution in the Western United States on Alfalfa and Cultivar Reaction to Mixed Populations of Ditylenchus dipsaci and Aphelenchoides ritzemabosi.. PubMed. 26(4 Suppl). 705–19.8 indexed citations
13.
Griffin, G. D., et al.. (1993). Pathological Relationship of Meloidogyne hapla and Phytophthora megasperma F. Sp. Medicaginis in Medicago sativa L.: Importance of Inoculation Timing, Soil Texture, and Temperature. Nematropica. 23(2). 183–193.1 indexed citations
14.
Gray, F. A., et al.. (1990). A disease survey of crops grown in the Bay region of Somalia, East Africa.. 38(1). 39–47.6 indexed citations
15.
Gray, F. A., et al.. (1987). Evaluation of Cultivars, Experimental Lines and Plant Introduction Collection of Sainfoin for Resistance to Meloidogyne hapla Chitwood.. PubMed. 19(1). 30–7.3 indexed citations
Rodrı́guez-Kábana, R., et al.. (1979). Research Papers: Efficacy of Planting-Time Applications of 1,3-Dichloropropene for Control of Nematodes on Soybeans. Nematropica. 9(1). 66–71.1 indexed citations
20.
Gray, F. A., et al.. (1972). Phytophthora root rot of alfalfa in Arizona.. The Plant disease reporter. 56(6). 472–473.2 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.