@article {Portela2009,
	title = {Micro foundations for wage flexibility: Wage insurance at the firm level},
	journal = {Scandinavian Journal of Economics},
	volume = {111},
	number = {1},
	year = {2009},
	pages = {29-50}
}
@article { s2008,
	title = {Demand for higher education programs: The impact of the Bologna process},
	journal = {CESifo Economic Studies},
	volume = {54},
	number = {2},
	year = {2008},
	pages = {229-247},
	author = {Cardoso, A.R. and Miguel Portela and C. S{\'a} and F. Alexandre}
}
