@article {litwin2021always,
	title = {Always alone? Network transitions among detached older Europeans and their effects},
	journal = {Ageing \& Society},
	volume = {41},
	number = {10},
	year = {2021},
	pages = {2299{\textendash}2313},
	publisher = {Cambridge University Press},
	author = {Litwin, Howard and Levinsky, Michal}
}
