This map shows the geographic impact of N. N. Shefov'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 N. N. Shefov with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites N. N. Shefov more than expected).
This network shows the impact of papers produced by N. N. Shefov. 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 N. N. Shefov. The network helps show where N. N. Shefov may publish in the future.
Co-authorship network of co-authors of N. N. Shefov
This figure shows the co-authorship network connecting the top 25 collaborators of N. N. Shefov.
A scholar is included among the top collaborators of N. N. Shefov 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 N. N. Shefov. N. N. Shefov is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Perminov, V. I., et al.. (1993). Determination of seasonal variations of the height of the emitting hydroxyl layer. Ge&Ae. 33(3). 113–120.1 indexed citations
5.
Perminov, V. I., et al.. (1989). The orographic effect in the upper atmosphere. 25. 926–932.8 indexed citations
6.
Shefov, N. N.. (1985). Solar activity and near-surface circulation as commensurate sources of variations of the thermal regime of the lower thermosphere. Geomagnetism and Aeronomy. 25. 848.3 indexed citations
7.
Shefov, N. N., et al.. (1983). Orographically induced variations in the emissions of the upper atmosphere. 19. 920–926.1 indexed citations
8.
Semenov, A. I., et al.. (1981). On water vapour in the upper atmosphere.. Ge&Ae. 21. 373.1 indexed citations
9.
Krasovskiĭ, V. I., et al.. (1980). Nitrogen oxide, water vapor, noctilucent clouds, and radio wave emission and absorption near the mesopause. Geomagnetism and Aeronomy. 20. 657–663.1 indexed citations
10.
Shefov, N. N., et al.. (1979). Propagation range of internal gravity waves in the mesosphere. 14. 1204–1206.1 indexed citations
Semenov, A. I., et al.. (1977). Internal gravity waves near the mesopause and the hydroxyl emission. Annales de Geophysique. 33. 347–355.25 indexed citations
13.
Krasovskiĭ, V. I. & N. N. Shefov. (1976). The intensities, Doppler and rotational temperatures of the upper atmospheric emissions and internal gravity waves. 32. 43–46.2 indexed citations
14.
Shefov, N. N., et al.. (1976). Influence of lunar tides on the probability of appearance of noctilucent clouds. 11. 1184–1186.13 indexed citations
15.
Shefov, N. N.. (1975). Lunar Variations of Hydroxyl Emission. Geomagnetism and Aeronomy. 14. 785.1 indexed citations
Shefov, N. N.. (1974). Lunar tidal variations of hydroxyl emission. 3. 313.1 indexed citations
18.
Shefov, N. N.. (1970). Atmospheric Migration and Dissipation of H and He. Geomagnetism and Aeronomy. 10. 215.1 indexed citations
19.
Shefov, N. N.. (1961). Émission de l'hélium dans la Haute Atmosphère. 17. 395.4 indexed citations
20.
Миронов, А. В., et al.. (1957). Spectrographs to be Used for Investigations of Atmospheric Emission During the Igy of 1957-1958. 7. 68–69.4 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.