@article{10_4171_dm_902,
     author = {Evangelos Alexander Nikitopoulos},
     title = {It\^o's formula for noncommutative $C^2$ functions of free {It\^o} processes},
     journal = {Documenta mathematica},
     pages = {1447--1507},
     year = {2022},
     volume = {27},
     doi = {10.4171/dm/902},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/902/}
}