%0 Journal Article %A Day, Matthew B %T Extending Johnson’s and Morita’s homomorphisms to the mapping class group %J Algebraic and Geometric Topology %D 2007 %P 1297-1326 %V 7 %N 3 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2007.7.1297/ %R 10.2140/agt.2007.7.1297 %F 10_2140_agt_2007_7_1297