Araujo, Giusepe Augusto, and Pablo Sotuyo Blanco. “Prehistoric Sound Tube: A Preliminary International Panorama”. Revista Do Museu De Arqueologia E Etnologia, no. 41, Dec. 2023, pp. 32-61, https://doi.org/10.11606/issn.2448-1750.revmae.2023.211124.