This map shows the geographic impact of T Heyl'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 T Heyl with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T Heyl more than expected).
This network shows the impact of papers produced by T Heyl. 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 T Heyl. The network helps show where T Heyl may publish in the future.
Co-authorship network of co-authors of T Heyl
This figure shows the co-authorship network connecting the top 25 collaborators of T Heyl.
A scholar is included among the top collaborators of T Heyl 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 T Heyl. T Heyl is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Heyl, T, et al.. (1987). The vermilion border of neonatal lips.. PubMed. 11(2). 158–63.3 indexed citations
6.
STEYN, P. S., et al.. (1987). Plant dermatitis-isolation and chemical investigation of the major vesicant principle of Smodingium argutum. 40(1). 82–86.2 indexed citations
Heyl, T, et al.. (1984). Lupus erythematosus with erythema multiforme (Rowell's syndrome). A case report.. PubMed. 65(14). 568–9.9 indexed citations
9.
Heyl, T. (1983). Brachioradial Pruritus. Archives of Dermatology. 119(2). 115–115.50 indexed citations
10.
Heyl, T. (1982). Tick bite alopecia. Clinical and Experimental Dermatology. 7(5). 537–542.12 indexed citations
11.
Heyl, T, et al.. (1977). Keratolytic winter erythema or 'oudtshoorn skin': a newly recognized inherited dermatosis prevalent in South Africa.. PubMed. 52(22). 871–4.12 indexed citations
12.
Heyl, T. (1975). Chronic protein malnutrition.. PubMed. 61(1-2). 87–91.1 indexed citations
13.
Heyl, T & James Gilmour Morrison. (1975). Keratoacanthoma in a Bantu patient. British Journal of Dermatology. 93(6). 699–700.1 indexed citations
14.
Heyl, T. (1973). [Buschke's scleredema].. PubMed. 47(25). 1126–7.2 indexed citations
Heyl, T, et al.. (1963). Skin Disease in the Western Cape Province. A Survey of the Incidence of Skin Diseases in 2,500 White and 1,500 Coloured Patients.. South African Medical Journal. 37(52).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.