This map shows the geographic impact of J. Grasman'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 J. Grasman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Grasman more than expected).
This network shows the impact of papers produced by J. Grasman. 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 J. Grasman. The network helps show where J. Grasman may publish in the future.
Co-authorship network of co-authors of J. Grasman
This figure shows the co-authorship network connecting the top 25 collaborators of J. Grasman.
A scholar is included among the top collaborators of J. Grasman 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 J. Grasman. J. Grasman is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Grasman, J.. (2000). Sustainable exploitation of biological populations. International Journal of Applied Mathematics and Computer Science. 10(1). 1–129.2 indexed citations
Grasman, J., et al.. (1985). Effect of stochastic perturbations on a spectral model of atmospheric circulation. Unknow. 1–18.1 indexed citations
16.
Grasman, J.. (1982). The mathematical modelling of entrained biological oscillators. 1–17.2 indexed citations
17.
Grasman, J.. (1981). Dips and slidings of the forced van der pol relaxation oscillator. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–12.1 indexed citations
18.
Grasman, J.. (1980). On the van der pol relaxation oscillator with a sinusoidal forcing term. Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands. 1–12.1 indexed citations
19.
Bavinck, H. & J. Grasman. (1973). The method of matched asymptotic expansions for the periodic solution of the van der pol equation. Data Archiving and Networked Services (DANS). 1–20.
20.
Grasman, J.. (1971). On the birth of boundary layers. Data Archiving and Networked Services (DANS). 36. 1–137.17 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.