@PhdThesis{BVMC:224051,
author = {Vigneron Tenorio, Alberto},
title = {Álgebras de semigrupos y aplicaciones},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2005},
year = {2005},
url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc4f229}
}