@article {1974571,
	title = {A Causal Typology of Migration: The Role of Commuting. Regional Studies},
	journal = {Regional Studies},
	volume = {22},
	year = {1988},
	month = {1988},
	pages = {331-340},
	keywords = {BIS},
	author = {Reitsma,Reindert and Vergoossen,A.}
}