| 2008 | 
| 6 | EE | Vassiliki A. Koutsonikola,
Athena Vakali,
Antonios Mpalasas,
Michael Valavanis:
A Structure-Based Clustering on LDAP Directory Information.
ISMIS 2008: 121-130 | 
| 5 | EE | Eirini Giannakidou,
Vassiliki A. Koutsonikola,
Athena Vakali,
Yiannis Kompatsiaris:
Co-Clustering Tags and Social Data Sources.
WAIM 2008: 317-324 | 
| 4 | EE | Vassiliki A. Koutsonikola,
Sophia G. Petridou,
Athena Vakali,
Hakim Hacid,
Boualem Benatallah:
Correlating Time-Related Data Sources with Co-clustering.
WISE 2008: 264-279 | 
| 3 | EE | Sophia G. Petridou,
Vassiliki A. Koutsonikola,
Athena Vakali,
Georgios I. Papadimitriou:
Time-Aware Web Users' Clustering.
IEEE Trans. Knowl. Data Eng. 20(5): 653-667 (2008) | 
| 2006 | 
| 2 | EE | Sophia G. Petridou,
Vassiliki A. Koutsonikola,
Athena Vakali,
Georgios I. Papadimitriou:
A Divergence-Oriented Approach for Web Users Clustering.
ICCSA (2) 2006: 1229-1238 | 
| 2004 | 
| 1 | EE | Vassiliki A. Koutsonikola,
Athena Vakali:
LDAP: Framework, Practices, and Trends.
IEEE Internet Computing 8(5): 66-72 (2004) |