Quality Scheme Assessment in the Clustering Process. - Maria Halkidi; Michalis Vazirgiannis; Yannis Batistakis (PKDD, 2000)

Clustering Algorithms and Validity Measures. - Maria Halkidi; Yannis Batistakis; Michalis Vazirgiannis (SSDBM, 2001)

On Clustering Validation Techniques. - Maria Halkidi; Yannis Batistakis; Michalis Vazirgiannis (J. Intell. Inf. Syst., 2001)

Cluster Validity Methods: Part I. - Maria Halkidi; Yannis Batistakis; Michalis Vazirgiannis (SIGMOD Rec., 2002)

Clustering Validity Checking Methods: Part II. - Maria Halkidi; Yannis Batistakis; Michalis Vazirgiannis (SIGMOD Rec., 2002)