FATMA ZOHRA LEBIB1,2, HAKIMA MELLAH1
AND ABDELKRIM MEZIANE1
1Information System and Multimedia System Division
Research Center on Scientific and Technical Information
Algiers, 16028 Algeria
2Department of Computer Science
University of Sciences and Technology Houari Boumediene
Algiers, 16111 Algeria
E-mail: {zmatouk; hmellah; ameziane}@mail.cerist.dz