This map shows the geographic impact of Campbell Ej'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 Campbell Ej with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Campbell Ej more than expected).
This network shows the impact of papers produced by Campbell Ej. 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 Campbell Ej. The network helps show where Campbell Ej may publish in the future.
Co-authorship network of co-authors of Campbell Ej
This figure shows the co-authorship network connecting the top 25 collaborators of Campbell Ej.
A scholar is included among the top collaborators of Campbell Ej 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 Campbell Ej. Campbell Ej is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ej, Campbell, et al.. (1983). Fate of human neutrophil elastase following receptor-mediated endocytosis by human alveolar macrophages. Implications for connective tissue injury.. PubMed. 101(4). 527–36.17 indexed citations
Ej, Campbell. (1979). An understanding of breathlessness.. PubMed. 92-93. 13–7.1 indexed citations
9.
Ej, Campbell, et al.. (1979). Clinical experience and the structure of memory.. PubMed. 18. 214–8.19 indexed citations
10.
Ej, Campbell, et al.. (1976). Perception of effort during partial curarization [proceedings].. PubMed. 263(1). 186P–187P.3 indexed citations
11.
Freedman, Ben, et al.. (1969). The ventilatory capacity of patients with chronic airways obstruction.. PubMed. 36(2). 307–16.92 indexed citations
12.
Ej, Campbell, et al.. (1969). The relationship between gas exchange and changes in blood lactate concentrations during exercise.. PubMed. 37(2). 263–72.26 indexed citations
13.
Rigatto, Maria Helena, et al.. (1968). Pulmonary recirculation time: influence of posture and exercise.. PubMed. 35(2). 183–95.6 indexed citations
14.
Ej, Campbell, et al.. (1967). Changes in ventilation, gas exchange and circulation during exercise in normal subjects.. PubMed. 32(2). 329–37.33 indexed citations
15.
Ej, Campbell, et al.. (1967). The immediate CO2 storage capacity of the body during exercise.. PubMed. 32(2). 161–5.24 indexed citations
16.
Ej, Campbell, et al.. (1963). The ability to distinguish between added elastic and resistive loads to breathing.. PubMed. 24. 201–7.8 indexed citations
17.
Ej, Campbell, et al.. (1961). The immediate effects of threshold loads on the breathing of men and dogs.. PubMed. 21. 309–20.31 indexed citations
18.
Ej, Campbell, et al.. (1961). The ability of man to detect added elastic loads to breathing.. PubMed. 20. 155–31.106 indexed citations
19.
Ej, Campbell, et al.. (1959). The oxygen consumption and efficiency of the respiratory muscles of young male subjects.. PubMed. 18(1). 55–64.35 indexed citations
20.
Ej, Campbell, et al.. (1957). Mechanisms of airway obstruction.. PubMed. 101(6). 329–43.37 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.