%0 Journal Article %A Evangelos Alexander Nikitopoulos %T Itô's formula for noncommutative $C^2$ functions of free Itô processes %J Documenta mathematica %D 2022 %P 1447-1507 %V 27 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/902/ %R 10.4171/dm/902 %F 10_4171_dm_902