@article{Gaz:2017wO, author = "Gaz, Alessandro and GLIGOROV, Vladimir and Robinson, Dean", title = "{Summary of Working Group 4 : mixing and mixing-related $CP$ violation in the $B$ system}", doi = "10.22323/1.291.0017", journal = "PoS", year = 2017, volume = "CKM2016", pages = "017" }