@article {Aad:2020wog,
	title = {{Observation of the associated production of a top quark and a $Z$ boson in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector}},
	journal = {JHEP},
	volume = {07},
	year = {2020},
	pages = {124},
	doi = {10.1007/JHEP07(2020)124},
	author = {Aad, Georges and others}
}
