@article {Aad:2019tua,
	title = {{Search for light long-lived neutral particles produced in $pp$ collisions at $\sqrt{s} =$ 13 TeV and decaying into collimated leptons or light hadrons with the ATLAS detector}},
	journal = {Eur. Phys. J. C},
	volume = {80},
	number = {5},
	year = {2020},
	pages = {450},
	doi = {10.1140/epjc/s10052-020-7997-4},
	author = {Aad, Georges and others}
}
