%0 Journal Article %A Pach, János %A Tardos, Gábor %A Tóth, Géza %T Indecomposable Coverings %J Canadian mathematical bulletin %D 2009 %P 451-463 %V 52 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2009-048-x/ %R 10.4153/CMB-2009-048-x %F 10_4153_CMB_2009_048_x