This map shows the geographic impact of Toine Spapens'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 Toine Spapens with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Toine Spapens more than expected).
This network shows the impact of papers produced by Toine Spapens. 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 Toine Spapens. The network helps show where Toine Spapens may publish in the future.
Co-authorship network of co-authors of Toine Spapens
This figure shows the co-authorship network connecting the top 25 collaborators of Toine Spapens.
A scholar is included among the top collaborators of Toine Spapens 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 Toine Spapens. Toine Spapens is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Spapens, Toine. (2019). Cerca Trova: the Italian mafia on Dutch territory. Kharkiv National University of Internal Affairs Institutional Repository (Kharkiv National Medical University). 259–287.4 indexed citations
Spapens, Toine, et al.. (2014). Invisible victims: The problem of policing environmental crime. Data Archiving and Networked Services (DANS).3 indexed citations
Spapens, Toine. (2012). The question of regulating illegal markets. The gambling and cannabis markets in the Netherlands.. Data Archiving and Networked Services (DANS).4 indexed citations
Spapens, Toine, et al.. (2011). Brandstof voor de opsporing: Evaluatie Wet bevoegdheden vorderen gegevens. Data Archiving and Networked Services (DANS).1 indexed citations
13.
Spapens, Toine. (2010). Cross-border public order policing in the Dutch border areas. Data Archiving and Networked Services (DANS).1 indexed citations
Spapens, Toine. (2008). Georganiseerde misdaad en strafrechtelijke samenwerking in de Nederlandse grensgebieden. Data Archiving and Networked Services (DANS).6 indexed citations
17.
Spapens, Toine, et al.. (2007). De wereld achter de wietteelt. Research portal (Tilburg University).15 indexed citations
18.
Spapens, Toine. (2007). Interaction Between Organised Crime and Law Enforcement: The Case of Ecstasy Production and Trafficking. Data Archiving and Networked Services (DANS).1 indexed citations
19.
Spapens, Toine. (2006). Interactie tussen criminaliteit en opsporing. Data Archiving and Networked Services (DANS).8 indexed citations
20.
Spapens, Toine, et al.. (2002). Smokkel van handvuurwapens vanuit voormalige Oostbloklanden naar Nederland. Data Archiving and Networked Services (DANS).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.