@article {Portela2014,
	title = {Returns to tenure or seniority?},
	journal = {Econometrica},
	volume = {82},
	number = {2},
	year = {2014},
	pages = {705-730},
	author = {Buhai, I.S. and Miguel Portela and C.N. Teulings and van Vuuren, A.}
}
@article {Portela2010,
	title = {Measurement error in education and growth regressions},
	journal = {Scandinavian Journal of Economics},
	volume = {112},
	number = {3},
	year = {2010},
	pages = {618-639},
	author = {Miguel Portela and Alessie, R. and C.N. Teulings}
}
