%0 Journal Article %A Fabio Tanania %T Subtle Characteristic Classes and Hermitian Forms %J Documenta mathematica %D 2019 %P 2493-2523 %V 24 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/732/ %R 10.4171/dm/732 %F 10_4171_dm_732