Chaga Lopes, Margarida and Fernandes, Graca (2010): Success/Failure in Higher Education:how long does it take to complete some core 1st. year disciplines? Unpublished.
CHAGAS LOPES, MARGARIDA and LEAO FERNANDES, GRAÇA (2011): Interruptions and failure in higher education: evidence from ISEG-UTL. Published in: European Education Research Journal , Vol. 10, No. 3 (17. October 2011): pp. 445-460.
