Braulionis Caesaraugustani epistulae et Isidori Hispalensis epistulae ad Braulionem - Braulio : Caesaraugustanus. (OLS)http://ftis/name/93110; Miguel Franco, Ruth. (OLS)http://ftis/name/93111; Martín-Iglesias, José Carlos. (OLS)http://ftis/name/86913; Isidorus : Hispalensis, santo. (OLS)http://ftis/name/52782 (Brepols,, 2018)