Rubio, Ángel, 1846-1906. http://id.loc.gov/authorities/names/n2009013654 ; Palacios, Miguel de, 1863-1920. http://id.loc.gov/authorities/names/n82020506 ; et al.
Nieto, Manuel, 1844-1915. http://id.loc.gov/authorities/names/nb2006001814 ; Palacios, Miguel de, 1863-1920. http://id.loc.gov/authorities/names/n82020506 ; et al.
Brull, Apolinar, 1845-1905. http://id.loc.gov/authorities/names/no2012095969 ; Palacios, Miguel de, 1863-1920. http://id.loc.gov/authorities/names/n82020506 ; et al.