TY - JOUR AU - Guerra, Lorenzo TI - Hopf ring structure on the mod p cohomology of symmetric groups JO - Algebraic and Geometric Topology PY - 2017 SP - 957 EP - 982 VL - 17 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.2140/agt.2017.17.957/ DO - 10.2140/agt.2017.17.957 ID - 10_2140_agt_2017_17_957 ER -