%0 Journal Article %A Leininger, Christopher J %A Reid, Alan W %T The co-rank conjecture for 3–manifold groups %J Algebraic and Geometric Topology %D 2002 %P 37-50 %V 2 %N 1 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2002.2.37/ %R 10.2140/agt.2002.2.37 %F 10_2140_agt_2002_2_37