%0 Journal Article %A Ettore Aldrovandi %A Niranjan Ramachandran %T Cup products, the Heisenberg group, and codimension two algebraic cycles %J Documenta mathematica %D 2016 %P 1313-1344 %V 21 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/x3/ %R 10.4171/dm/x3 %F 10_4171_dm_x3