1. Gama LFM. Os Carrilhões de Mafra: Palácio Nacional de Mafra. Direcção-Geral dos Edificios e Monumentos Nacionais, Lisboa; 1989.
2. van Heuven EW. Acoustical measurements on church-bells and carrillons. Gebroeders Van Cleef; 1949.
3. Normal modes of the modern english church bell;Perrin;J Sound Vib,1983
4. Vibrations of bells;Rossing;Appl Acoust,1987
5. Lehr A. The designing of swinging bells and Carillon bells in the past and present. Athanasius Kircher Foundation, Asten; 1987.