@booklet {HunJexLan19-NAtom,
	title = {Quantum Systems at The Brink. Existence and Decay Rates of Bound States at Thresholds; Atoms},
	howpublished = {arXiv:1908.05016},
	year = {2019},
	pages = {14},
	author = {Dirk Hundertmark and Michal Jex and Markus Lange}
}
