This map shows the geographic impact of Peter Kreins'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 Peter Kreins with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Peter Kreins more than expected).
This network shows the impact of papers produced by Peter Kreins. 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 Peter Kreins. The network helps show where Peter Kreins may publish in the future.
Co-authorship network of co-authors of Peter Kreins
This figure shows the co-authorship network connecting the top 25 collaborators of Peter Kreins.
A scholar is included among the top collaborators of Peter Kreins 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 Peter Kreins. Peter Kreins is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Döhler, Helmut, et al.. (2012). Evaluation of policy measures and methods to reduce diffuse water pollution. Publication Server of the Wuppertal Institute (Wuppertal Institute).1 indexed citations
7.
Kreins, Peter, et al.. (2012). Landnutzungsänderungen in Deutschlands Landwirtschaft : rückläufige Anbaudiversität hat viele Ursachen. 39(3). 118–122.3 indexed citations
8.
Offermann, Frank, et al.. (2010). vTI -Baseline 2009 to 2019: Agri-economic projections for Germany. OpenAgrar. 358(3). 157–172.6 indexed citations
9.
Wendland, Frank, Horst Behrendt, Ulrike Hirt, et al.. (2010). Model-based analysis of agricultural and environmental actions to reduce the nitrogen load in groundwater and surface waters in the Weser river basin district. 54(4). 231–243.3 indexed citations
10.
Kreins, Peter, Horst Behrendt, Claudia Heidecke, et al.. (2010). Analyse von Agrar- und Umweltmaßnahmen im Bereich des landwirtschaftlichen Gewässerschutzes vor dem Hintergrund der EG -Wasserrahmenrichtlinie in der Flussgebietseinheit Weser. JuSER (Forschungszentrum Jülich). 336. 342.11 indexed citations
11.
Kreins, Peter, et al.. (2010). AUSWIRKUNGEN DER NOVELLIERUNG DES ERNEUER- BARE-ENERGIEN-GESETZES AUF DIE LANDWIRTSCHAFT.1 indexed citations
Kreins, Peter, et al.. (2009). Health Check der EU-Agrarpolitik : Auswirkungen der Beschlüsse ; Studie im Auftrag des BMELV. Econstor (Econstor).1 indexed citations
Brockmeier, Martina, et al.. (2006). Analyse politischer Handlungsoptionen für den Milchmarkt. OpenAgrar. 300.6 indexed citations
19.
Kreins, Peter, et al.. (2000). Entwicklung der regionalen Wettbewerbsfähigkeit im Bereich der Milchproduktion und Folgen für die Landnutzung. 36.2 indexed citations
20.
Osterburg, Bernhard, et al.. (1998). Landwirtschaft im Jahr 2005. 113(11). 30–35.1 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.