This map shows the geographic impact of H. Petzold'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 H. Petzold with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Petzold more than expected).
This network shows the impact of papers produced by H. Petzold. 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 H. Petzold. The network helps show where H. Petzold may publish in the future.
Co-authorship network of co-authors of H. Petzold
This figure shows the co-authorship network connecting the top 25 collaborators of H. Petzold.
A scholar is included among the top collaborators of H. Petzold 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 H. Petzold. H. Petzold is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Petzold, H.. (2014). Rescue and Restructuring (R&R) Guidelines – Thoughts and Comments on the Commission’s Draft. European State Aid Law Quarterly. 13(2). 289–294.
4.
Voss, Karsten, Andreas Wagner, John Grunewald, et al.. (2008). Energy-Optimised Building- Experience and Future Perspectives from a Demonstration Programme in Germany. OakTrust (Texas A&M University Libraries).1 indexed citations
Santos, Sandra Aparecida, et al.. (2005). Adaptação do cavalo pantaneiro ao estresse da lidadiária de gado no pantanal, Brasil. Archivos de Zootecnia. 54(206). 509–513.9 indexed citations
Petzold, H. & R. Marwitz. (1980). An improved fluorescence microscopical detection of mycoplasma like organisms in plant tissue. 97(4). 327–331.1 indexed citations
12.
Özel, M., et al.. (1980). Peroxidase activity in the compatible and incompatible systems with downy mildew of spinach.. 97(2). 156–168.1 indexed citations
13.
Petzold, H. & R. Marwitz. (1980). Gallocyanine-chromalum staining for the detection of mycoplasma-like organisms.. 87(1). 46–50.1 indexed citations
14.
Özel, M., et al.. (1979). Host-parasite interactions with several compatible and incompatible combinations of downy mildew and spinach. Light and electronmicroscope studies.. 94(1). 16–44.3 indexed citations
15.
Petzold, H. & Meral Özel. (1976). [A simple addition to a critical point apparatus for drying of serial sections (author's transl)].. PubMed. 78(4). 292–4.1 indexed citations
16.
Petzold, H., et al.. (1972). Light and electron microscope studies of the host-parasite relationship of susceptible and Peronospora resistant varieties of tobacco and spinach.. 74(4). 296–313.1 indexed citations
17.
Petzold, H., et al.. (1968). [Influence of B complex vitamins on experimental liver damage in rats].. PubMed. 38(1). 97–103.
Petzold, H., et al.. (1959). [Effects of N-(4-aminobenzosulfonyl)-N'-butylurea (oranil, invenol) on carbon tetrachloride-induced fibrosis in rabbits].. PubMed. 14. 853–7.
20.
Petzold, H., et al.. (1952). [Experimental liver damage by TB I].. PubMed. 7(14). 625–8.1 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.