1. Belchior, Susana. 2010. ‘Sinkler Darby’s 1900 Expedition for the Gramophone Company in Portugal,’ in Gronow, Pekka and Christiane Hofer (eds) Contributions to the History of the Record Industry: Beiträge zur Geschichte der Schallplattenindustrie, vol. 5. Vienna: Gesellschaft für Historische Tonträger, pp. 9¬—18.
2. Belchior, Susana. 2011. ‘The early years of recording in Portugal: Beka,’ in in Gronow, Pekka and Christiane Hofer (eds) Contributions to the History of the Record Industry: Beiträge zur Geschichte der Schallplattenindustrie, vol. 3. Vienna: Gesellschaft für Historische Tonträger, pp. 50—55.
3. Belchior, Susana. 2021. Immaterial in the Material: A study on 78rpm audio carriers in Portuguese collections. Ph.D Dissertation: Universidade Nova de Lisboa. https://run.unl.pt/bitstream/10362/133066/1/Caxeiro_2021.pdf
4. Belchior, Susana and Leonor Losa. 2010. ‘The Introduction of phonogram market in Portugal: Lindström labels and local traders (1879–1925),’ in Pekka Gronow and Christiane Hofer (eds), The Lindström Project: Contributions to the history of the record industry: Beiträge zur Geschichte der Schallplattenindustrie, vol. 2. Vienna: Gesellschaft für Historische Tonträger, pp. 7—11.
5. Benevides, Francisco da Fonseca. 1878. ‘Phonographo fallante de Edison,’ O Occidente, 15 April, pg. 64.