@article{Bacchetta:20228d, author = "Bacchetta, Alessandro and Celiberto, Francesco Giovanni and Radici, Marco", title = "{Toward twist-2 $T$-odd transverse-momentum-dependent gluon distributions: the $f$-type Sivers function}", doi = "10.22323/1.398.0376", journal = "PoS", year = 2022, volume = "EPS-HEP2021", pages = "376" }