@article {duer2022observation,
	title = {Observation of a correlated free four-neutron system},
	journal = {Nature},
	volume = {606},
	number = {7915},
	year = {2022},
	pages = {678{\textendash}682},
	publisher = {Nature Publishing Group},
	author = {Duer, M and Aumann, T and Gernh{\"a}user, R and Panin, V and Paschalis, S and Rossi, DM and Achouri, NL and Ahn, D and Baba, H and Bertulani, C.A. and others}
}
