Visualization of vessel movements. - Niels Willems; Huub van de Wetering; Jarke J. van Wijk (Comput. Graph. Forum, 2009)

An integrated approach for visual analysis of a multisource moving objects knowledge base. - Niels Willems; Willem Robert van Hage; Gerben de Vries; Jeroen H. M. Janssens; Véronique Malaisé (Int. J. Geogr. Inf. Sci., 2010)

Interactive visualization of multivariate trajectory data with density maps. - Roeland Scheepens; Niels Willems; Huub van de Wetering; Jarke J. van Wijk (PacificVis, 2011)

Evaluation of the Visibility of Vessel Movement Features in Trajectory Visualizations. - Niels Willems; Huub van de Wetering; Jarke J. van Wijk (Comput. Graph. Forum, 2011)

Composite Density Maps for Multivariate Trajectories. - Roeland Scheepens; Niels Willems; Huub van de Wetering; Gennady L. Andrienko; Natalia V. Andrienko; Jarke J. van Wijk (IEEE Trans. Vis. Comput. Graph., 2011)

Interactive Density Maps for Moving Objects. - Roeland Scheepens; Niels Willems; Huub van de Wetering; Jarke J. van Wijk (IEEE Computer Graphics and Applications, 2012)

Visualization of Vessel Traffic. - Niels Willems; Roeland Scheepens; Huub van de Wetering; Jarke J. van Wijk (Situation Awareness with Systems of Systems, 2013)

On smallest 3-polytopes of given graph radius. - Riccardo W. Maffucci; Niels Willems (Discret. Math., 2023)