Durán, Gloria G., and Miguel Molina-Alarcón. “‘Paper lovers!’: The Singers of ‘Cuplés’ and Their Performativity through the Photographic Postcards of the First Decades of the 20th Century in Spain”. Discursos Fotograficos, vol. 16, no. 29, Feb. 2021, pp. 212-45, doi:10.5433/1984-7939.2020v16n29p212.