TY - JOUR AU - Day, Matthew B TI - Extending Johnson’s and Morita’s homomorphisms to the mapping class group JO - Algebraic and Geometric Topology PY - 2007 SP - 1297 EP - 1326 VL - 7 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.2140/agt.2007.7.1297/ DO - 10.2140/agt.2007.7.1297 ID - 10_2140_agt_2007_7_1297 ER -