1. Augusto, Carlos Alberto. 2014. Sons e Sile^ncios da Paisagem Sonora Portuguesa. Lisbon: Fundação Francisco Manuel Dos Santos.
2. The Piano in the Portuguese Experimental Music Scene: Approaches, Contexts, and Practices
3. Erlich Oliva Alejandro. 2022. Email sent to Filipa Magalhães. 16 July 2022.
4. Erlich Oliva Alejandro. 2023. Personal interview with the author. 14 January 2023 Lisbon Portugal.
5. Kovadloff, Santiago. 1993. El silencio primordial. Buenos Aires: Emecé Editores.