@ARTICLE{BOUA08F,
    AUTHOR = {Ismael Bouassida Rodriguez and N. Van Wambeke and Khalil Drira and
                  Christophe chassot  and Mohamed Jmaiel},
    TITLE = {Multi-layer coordinated adaptation based on graph
                  refinement for cooperative activities},
    JOURNAL = {Communications of SIWN},
    YEAR = {2008},
    VOLUME = {4},
    NUMBER = {1},
    PAGES = {163--167}
    }