Toward characterizing a more significant identity of core structure within dynamic social network. - Billel Hamadache; Hassina Seridi-Bouchelaghem; Nadir Farah (ASONAM, 2013)

Toward Expressing a Preliminary Core Identity Significantly Characterized from the Social Network Temporal Dynamicity. - Billel Hamadache; Hassina Seridi-Bouchelaghem; Nadir Farah (MEDI, 2013)

An Elite Grouping of Individuals for Expressing a Core Identity Based on the Temporal Dynamicity or the Semantic Richness. - Billel Hamadache; Hassina Seridi-Bouchelaghem; Nadir Farah (Social Network Analysis, 2014)

How to analyse a semantic social network of learners in a social learning environment? - Billel Hamadache; Hassina Seridi-Bouchelaghem (Int. J. Web Based Communities, 2016)

A significant core structure inside the social network evolutionary process. - Billel Hamadache; Hassina Seridi-Bouchelaghem; Nadir Farah (Soc. Netw. Anal. Min., 2016)