@article { s2004,
	title = {Determinants of the regional demand for higher education in the Netherlands: A gravity model approach},
	journal = {Regional Studies},
	volume = {38},
	number = {4},
	year = {2004},
	pages = {375-392},
	author = {C. S{\'a} and Florax, R.J.G.M. and Rietveld, P.}
}
