Fernández-Xesta y Vázquez, E. 2023. Evolution of the Sigillography of the bishop and inquisitor general don fray Manuel de Abbad y Lasierra during his ecclesiastical career (1729-1806). Documenta & Instrumenta - Documenta et Instrumenta. 21, (Jun. 2023), 61–75. DOI:https://doi.org/10.5209/docu.88105.