Discriminant Analysis When the Number of Features Is Unbounded. - Willem Schaafsma; Ton Steerneman (IEEE Trans. Syst. Man Cybern., 1981)

40 Selecting variables in discriminant analysis for improving upon classical procedures. - Willem Schaafsma (Classification, Pattern Recognition and Reduction of Dimensionality, 1982)

Estimating a density by adapting an initial guess. - Casper J. Albers; Willem Schaafsma (Comput. Stat. Data Anal., 2003)

Trying to Resolve the Two-Envelope Problem. - Casper J. Albers; Barteld P. Kooi; Willem Schaafsma (Synth., 2005)