%0 Journal Article %A Lisca, Paolo %T Sums of lens spaces bounding rational balls %J Algebraic and Geometric Topology %D 2007 %P 2141-2164 %V 7 %N 4 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2007.7.2141/ %R 10.2140/agt.2007.7.2141 %F 10_2140_agt_2007_7_2141