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 Unpublished.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 (2006): Portuguese Women in Science and Technology (S&T): Some Gender Features Behind MSc. and PhD. Achievement. Unpublished.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.
LEÃO FERNANDES, GRAÇA and CHAGAS LOPES, MARGARIDA (2008): ISEG Undergraduate Students: Determinants of Academic Performance. Unpublished.
Lopes, Margarida and Fernandes, Graca (2011): Formal, non-formal and informal learning and higher education graduates' reemployment: evidence for Portugal. Unpublished.
Sampaio, José João (2008): From qualification to professional competencies. Published in: Sampaio, José João (2009), Air Traffic Control. The Challenge of Balanced Human-Machine Operational Interaction, Lisboa, Edições Lusófonas, ISBN: 978-972-8881-66-5 (19. May 2009): pp. 64-73.
