Why is it difficult to grasp the impacts of the Portuguese quality assurance system?

Title	Why is it difficult to grasp the impacts of the Portuguese quality assurance system?
Publication Type	Journal Article
Year of Publication	2013
Authors	Veiga, LG, Rosa, MJoão e Ma, Dias, D, Amaral, A
Journal	European Journal of Education
Volume	48
Issue	3
Pagination	454–470
URL	https://doi.org/10.1111%2Fejed.12040
DOI	10.1111/ejed.12040