Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
This map shows the geographic impact of A. P. Roelfs'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 A. P. Roelfs with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites A. P. Roelfs more than expected).
This network shows the impact of papers produced by A. P. Roelfs. 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 A. P. Roelfs. The network helps show where A. P. Roelfs may publish in the future.
Co-authorship network of co-authors of A. P. Roelfs
This figure shows the co-authorship network connecting the top 25 collaborators of A. P. Roelfs.
A scholar is included among the top collaborators of A. P. Roelfs 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 A. P. Roelfs. A. P. Roelfs is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Roelfs, A. P., D. L. Long, & J. J. Roberts. (1995). Races of Puccinia graminis in the United States during 1993.. Plant Disease. 79(9). 969–972.6 indexed citations
Kolmer, J. A., P. L. Dyck, & A. P. Roelfs. (1991). An appraisal of stem and leaf rust resistance in North American hard red spring wheats and the probability of multiple mutations to virulence in population of cereal rust fungi. Phytopathology. 81(3). 237–239.59 indexed citations
Long, D. L., J. F. Schafer, & A. P. Roelfs. (1985). Specific virulence of Puccinia recondita f. sp. tritici in the United States from 1978 through 1983. Plant Disease. 69(4). 343–347.14 indexed citations
Hu, Chunguang & A. P. Roelfs. (1985). The wheat rusts in the People's Republic of China.. 13(1). 11–28.2 indexed citations
16.
Bushnell, W. R. & A. P. Roelfs. (1984). The cereal rusts. Volume I. Origins, specificity, structure, and physiology..12 indexed citations
17.
Roelfs, A. P. & J. W. Martens. (1984). Proposal for an international system of race nomenclature for Puccinia graminis f. sp. tritici.3 indexed citations
18.
Roelfs, A. P., et al.. (1975). Races of Puccinia graminis f. sp. avenae in the U.S.A. during 1974. The Plant disease reporter. 59(7). 614–616.5 indexed citations
Roelfs, A. P., D. V. McVey, D. L. Long, & Jay Rowell. (1972). Natural rust epidemics in Wheat nurseries as affected by inoculum density.. The Plant disease reporter. 56(5). 410–414.3 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.