@inproceedings{Sommer:2019hs, author = "Sommer, Rainer and Onogi, T. and Horsley, R.", title = "{The 2019 lattice FLAG $a_S$ average}", doi = "10.22323/1.365.0020", booktitle = "Proceedings of alphas-2019: Workshop on precision measurements of the QCD coupling constant {\textemdash} PoS(ALPHAS2019)", year = 2019, volume = "365", pages = "020" }