This map shows the geographic impact of F. Nienhaus'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. Nienhaus with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites F. Nienhaus more than expected).
This network shows the impact of papers produced by F. Nienhaus. 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. Nienhaus. The network helps show where F. Nienhaus may publish in the future.
Co-authorship network of co-authors of F. Nienhaus
This figure shows the co-authorship network connecting the top 25 collaborators of F. Nienhaus.
A scholar is included among the top collaborators of F. Nienhaus 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. Nienhaus. F. Nienhaus is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Butin, H. & F. Nienhaus. (1995). Farbatlas Waldschäden : Diagnose von Baumkrankheiten.9 indexed citations
Nienhaus, F., et al.. (1982). Histological and cytological studies on the infectious leafroll disease of the grapevine.. 89. 508–517.3 indexed citations
4.
Nienhaus, F., et al.. (1982). Investigations on the etiology of the lethal disease of coconut palm in Tanzania.. 89(4). 185–193.10 indexed citations
Nienhaus, F., et al.. (1980). Further investigations on the 'latent rosette disease' of sugar beet I. Symptomatology, cytological and histological observations.. 87(12). 747–755.3 indexed citations
7.
Sikora, R. A., et al.. (1977). Rickettsia-like organisms in Xiphinema index Thorne & Allen found associated with yellows disease of grapevine.. 84(4). 240–243.3 indexed citations
8.
Steiner, K. G., et al.. (1977). Rickettsia-like organisms associated with a decline of coconut palms in Tanzania.. 84(6). 345–351.3 indexed citations
9.
Nienhaus, F. & H. Schmutterer. (1976). Rickettsialike organisms in latent rosette (witches' broom) diseased sugarbeet (Beta vulgaris) and spinach (Spinacia oleracea) plants and in the vector Piesma quadratum Fieb.3 indexed citations
Nienhaus, F. & Christina Mack. (1974). Infection of Pythium arrhenomanes in vitro with tobacco mosaic virus and tobacco necrosis virus. 81(12). 728–731.8 indexed citations
Nienhaus, F., et al.. (1970). Metabolic changes in plants after virus infection under the influence of wound stimulus. I. Poly-phenoloxidase, peroxidase, and cytochromoxidase activity.. 68(3). 193–205.2 indexed citations
Nienhaus, F., et al.. (1969). Plant diseases in Lebanon.. 76. 537–551.11 indexed citations
19.
Nienhaus, F., et al.. (1967). First report on plant virus diseases in Lebanon, Jordan, and Syria.. 74. 459–471.8 indexed citations
20.
Nienhaus, F.. (1960). The host range of Phytophthora cactorum.. 38. 33–68.6 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.