@article {Aad:2019dxu,
	title = {{Evidence for the production of three massive vector bosons with the ATLAS detector}},
	journal = {Phys. Lett. B},
	volume = {798},
	year = {2019},
	pages = {134913},
	doi = {10.1016/j.physletb.2019.134913},
	author = {Aad, Georges and others}
}
