J. S. Neves et al., "Cultural heritage valorisation and the public access to national monuments", in HERITAGE 2020 - Proc. of the 7th Int. Conf. on Heritage and Sustainable Development, Amoêda, R., Lira, S., and Pinheiro, C., Ed., Coimbra, Green Lines Institute for Sustainable Development, 2020, vol. 1, pp. 27-37