%0 Journal Article %A Amel Bendali-Braham %A Noureddine Ikhlef-Eschouf %A Mostafa Blidia %T A characterization of be-critical trees %J Comptes Rendus. Mathématique %D 2018 %P 115-120 %V 356 %N 2 %I Elsevier %R 10.1016/j.crma.2018.01.006 %G en %F CRMATH_2018__356_2_115_0