This map shows the geographic impact of Klaas Sikkel'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 Klaas Sikkel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Klaas Sikkel more than expected).
This network shows the impact of papers produced by Klaas Sikkel. 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 Klaas Sikkel. The network helps show where Klaas Sikkel may publish in the future.
Co-authorship network of co-authors of Klaas Sikkel
This figure shows the co-authorship network connecting the top 25 collaborators of Klaas Sikkel.
A scholar is included among the top collaborators of Klaas Sikkel 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 Klaas Sikkel. Klaas Sikkel is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Daneva, Maya, Klaas Sikkel, Nelly Condorí-Fernández, & Andrea Herrmann. (2011). Experiences in Using Practitioner’s Checklists to Evaluate the Relevance of Experiments Reported in Requirements Engineering. University of Twente Research Information.1 indexed citations
Sikkel, Klaas, et al.. (2008). Structures to effectively share architectural knowledge. International Conference on Software Engineering. 192–199.1 indexed citations
6.
Sikkel, Klaas, et al.. (2007). Inter-Organisational System Coordination: the e-Customs Case Study. CTIT technical report series.1 indexed citations
Sikkel, Klaas, et al.. (2004). Understanding the Dynamics of Requirements Evolution: A Comparative Case Study of Groupware Implementation.. University of Twente Research Information. 177–194.1 indexed citations
9.
Sikkel, Klaas, et al.. (2002). An evolutionary approach to groupware implementation: the context of requirements engineering in the socio-technical frame. University of Twente Research Information.4 indexed citations
10.
Sikkel, Klaas. (2002). Parsing Schemata: A Framework for Specification and Analysis of Parsing Algorithms. Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft).5 indexed citations
11.
Sikkel, Klaas, et al.. (2001). A cross-case comparison of BSCW in different educational settings. Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft). 553–560.5 indexed citations
12.
Sikkel, Klaas, et al.. (2000). A Case Base for Requirements Engineering: Problem Categories and Solution Techniques. 80–85.2 indexed citations
13.
Sikkel, Klaas, Huub Ruël, & Roel Wieringa. (1999). Towards a Method for Evolutionary Implementation of Groupware. 187–192.1 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.