%0 Journal Article %A Marcelo, Agustín %A Marcelo, Félix %A Rodríguez, César %T The Grade Conjecture and the S 2 Condition %J Canadian mathematical bulletin %D 2002 %P 119-122 %V 45 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2002-014-6/ %R 10.4153/CMB-2002-014-6 %F 10_4153_CMB_2002_014_6