Charola, A. Elena, Delgado Rodrigues, J., Henriques, F. M. A., Aires Barros, L., and Costa Silveira, A. 2015. "
The Exterior Conservation Project of the Tower of Belem and its Sequel." in
Sphera Mundi-Arte e Cultura no Tempo dos Descubrimentos, edited by Cruz Almeida, I. and Neto, M. I., 539–549. Casal de Cambra: Caleidoscopio.