This map shows the geographic impact of P. Zwart'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 P. Zwart with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. Zwart more than expected).
This network shows the impact of papers produced by P. Zwart. 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 P. Zwart. The network helps show where P. Zwart may publish in the future.
Co-authorship network of co-authors of P. Zwart
This figure shows the co-authorship network connecting the top 25 collaborators of P. Zwart.
A scholar is included among the top collaborators of P. Zwart 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 P. Zwart. P. Zwart is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Kastelein, Ronald A., et al.. (1990). The suckling of a Bottlenose dolphin calf (Tursiops truncatus) by a foster mother, and information on transverse birth bands. Aquatic Mammals. 16(3). 134–138.17 indexed citations
6.
Herck, H. van, Ayla Hesp, Astrid Versluis, P. Zwart, & L.F.M. van Zutphen. (1989). Prolapsus vaginae in the IIIVO/JU rabbit. Laboratory Animals. 23(4). 333–336.5 indexed citations
7.
Zwart, P., et al.. (1987). [Control of harmful mammals].. PubMed. 112(14). 857–64.1 indexed citations
8.
Zwart, P., et al.. (1986). [Foreign body in the stomach of a snake. Surgical removal. Case report].. PubMed. 111(19). 925–7.4 indexed citations
Dorrestein, Gerry M., P. Zwart, & Marije Buitelaar. (1980). [Problems arising from disease during the periods of breeding and rearing canaries and other aviary birds (author's transl)].. PubMed. 105(13). 535–43.13 indexed citations
11.
Zwart, P., et al.. (1977). Yersinia pseudotuberculosis in birds.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 102(2). 81–5.5 indexed citations
Zwart, P., et al.. (1972). [Toxoplasmosis in crowned pigeons and other birds at the Royal Zoo, Blijdorp, in Rotterdam].. PubMed. 55. 29–40.2 indexed citations
16.
Zwart, P.. (1970). A nephroblastoma in a fire-bellied newt, Cynops pyrrhogaster.. PubMed. 30(11). 2691–4.10 indexed citations
17.
Zwart, P., et al.. (1969). Disturbance of bone formation in the common iguana (Iguana iguana L): pathology and etiology.. PubMed. 48. 333–56.6 indexed citations
Peters, John C., et al.. (1960). Report on births and deaths occurring in the gardens of the Royal Rotterdam Zoo during the year 1958.. Tijdschrift voor diergeneeskunde. 85. 1203–1213.3 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.