@article{Usai:2021p3, author = "Usai, Emanuele", title = "{Determination of $\kappa_\text{t}$ from $\text{t}\bar{\text{t}}$, $\text{t}\bar{\text{t}}\text{t}\bar{\text{t}}$, and others}", doi = "10.22323/1.397.0074", journal = "PoS", year = 2021, volume = "LHCP2021", pages = "074" }