The works of Villamil were forgotten for many years, but they have been recently rediscovered by Isabel Díaz de Aguilar and Federico Suárez Caballero, based on the patents he registered and two books wrtten by Cantero about the Libélula Española.
The works of Cantero were forgotten during years, and they have been recently rediscovered by Isabel Díaz de Aguilar and Federico Suárez Caballero. Basic sources are the patents he registered and two books by Cantero about the Libélula española.