@article {BazakEtAl2019PRL,
	title = {Four-Body Scale in Universal Few-Boson Systems},
	journal = {Phys. Rev. Lett.},
	volume = {122},
	year = {2019},
	pages = {143001},
	doi = {10.1103/PhysRevLett.122.143001},
	url = {https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.143001},
	author = {Bazak, B. and Kirscher, J. and Konig, S. and Pavon Valderrama, M. and Barnea, N. and van Kolck, U.}
}
