Valdés Blanco-Rajoy, R. 2020. Strongholds of the Ribeira Sacra in the Area Surrounding the Monastery of Santo Estevo de Ribas de Sil. Madrygal. Revista de Estudios Gallegos. 23, (Dec. 2020), 375–399. DOI:https://doi.org/10.5209/madr.73078.