@article {herdman2017entanglement,
	title = {Entanglement area law in superfluid 4 He},
	journal = {Nature Physics},
	volume = {13},
	number = {6},
	year = {2017},
	pages = {556{\textendash}558},
	publisher = {Nature Publishing Group},
	author = {Herdman, CM and Roy, P-N and Melko, RG and Del Maestro, Adrian}
}
