Decomposition of Separable Concave Structuring Functions. - Erik A. Engbers; Rein van den Boomgaard; Arnold W. M. Smeulders (J. Math. Imaging Vis., 2001)

Design Considerations for Generic Grouping in Vision. - Erik A. Engbers; Arnold W. M. Smeulders (IEEE Trans. Pattern Anal. Mach. Intell., 2003)

An Information-Based Measure for Grouping Quality. - Erik A. Engbers; Michael Lindenbaum; Arnold W. M. Smeulders (ECCV (3), 2004)