Eigenvectors of a kurtosis matrix as interesting directions to reveal cluster structure. - Daniel Peña; Francisco J. Prieto; Júlia Viladomat (J. Multivar. Anal., 2010)

Nearest-neighbors medians clustering. - Daniel Peña; Júlia Viladomat; Ruben H. Zamar (Stat. Anal. Data Min., 2012)