Numerical notoriety, 2013: t.p. (Lamberto García del Cid)

National Library of Australia online, viewed 23 September 2014 (access point,: García del Cid, Lamberto, 1951-)

Amazon.it, viewed 23 September 2013: author page (He was born in Portugalete (Vizcaya) in 1951, currently lives in Zaragoza)