R. de Alvarenga Neto. Federal University of Minas Gerais, Brazil, (2005)ndltd.org (oai:agregador.ibict.br.BDTD_UFMG:oai:bibliotecadigital.ufmg.br:MTD2BR-EARM-6ZGNE6).
L. de Jesus, L. Drummond, und D. de Oliveira. CARLA, Volume 796 von Communications in Computer and Information Science, Seite 321-336. Springer, (2017)