CMS Collaboration & LHCb Collaboration, Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2015). Observation of the rare Bs0 → µ+µ− decay from the combined analysis of CMS and LHCb data. Nature, 522(7554), 68-72. doi:10.1038/nature14474.