M. M. Pereira et al., "The degree of customer satisfaction in university restaurants: The case of the University of Évora in Portugal", in Proc. of EDULEARN 11 Conf., L. Gómez Chova, D. Martí Belenguer, I. Candel Torres (ed.), Int. Association of Technology, Education and Development IATED, 2011, pp. 1597-1605