This map shows the geographic impact of F. Walraven'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. Walraven with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites F. Walraven more than expected).
This network shows the impact of papers produced by F. Walraven. 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. Walraven. The network helps show where F. Walraven may publish in the future.
Co-authorship network of co-authors of F. Walraven
This figure shows the co-authorship network connecting the top 25 collaborators of F. Walraven.
A scholar is included among the top collaborators of F. Walraven 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. Walraven. F. Walraven is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Thomas, Robert J., et al.. (1997). Geology of the Archaean Nzimane Inlier, Zululand. South African Journal of Geology. 100(2). 123–136.7 indexed citations
3.
Robb, Laurence, et al.. (1994). The Albert silver mine revisited; toward a model for polymetallic mineralization in granites of the Bushveld Complex, South Africa. Exploration and Mining Geology. 3(3). 247–262.5 indexed citations
Walraven, F., Craig B. Smith, & F. J. Kruger. (1991). Age determinations of the Zoetlief Group; a Ventersdorp Supergroup correlative. South African Journal of Geology. 94. 220–227.17 indexed citations
10.
Walraven, F., et al.. (1991). Geochronology of the Schurwedraai alkali granite and associated nepheline syenite and implications for the origin of the Vredefort structure. South African Journal of Geology. 94. 228–235.14 indexed citations
Walraven, F.. (1987). Geochronological and isotopic studies of Bushveld Complex rocks from the Fairfield Borehole at Moloto, northeast of Pretoria. South African Journal of Geology. 90(4). 352–360.10 indexed citations
14.
Walraven, F., et al.. (1987). Implications of new U-Pb zircon age dating on the Nebo Granite of the Bushveld Complex. South African Journal of Geology. 90(4). 344–351.12 indexed citations
15.
Walraven, F., et al.. (1985). The petrology and geochemistry of the pre-Karoo Elandskraal Volcano, South Africa. South African Journal of Geology. 88(2). 225–243.14 indexed citations
Walraven, F.. (1984). Geochemistry of the Timbavati Gabbro of the Eastern Transvaal Lowveld, South Africa. South African Journal of Geology. 87(3). 211–223.4 indexed citations
18.
Walraven, F., et al.. (1983). Summary of age determinations carried out during the period April 1981 to March 1982.38 indexed citations
19.
Walraven, F., et al.. (1975). Airborne geophysics and ERTS imagery. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information).1 indexed citations
20.
Walraven, F.. (1974). Tectonism during the emplacement of the Bushveld Complex and the resulting fold structures. 77(3). 323–328.5 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.