A matrix description of weakly bipartitive and bipartitive families
  The notions of weakly bipartitive and bipartitive families were introduced by Montgolfier (2003) as a general tool for studying some decomposition of graphs and other combinatorial structures. In this paper, we give a matrix description of these notions. 
Edward Bankoussou-mabiala, Abderrahim Boussa\"iri, Abdelhak   Cha\"icha\^a and Brahim Chergui
math.CO