De Bettio, Raphael Winckler, and Alejandro Martins Rodriguez. “Techiques Applied in Textual Search Engines”. Revista e-TECH: Tecnologias para Competitividade Industrial - ISSN - 1983-1838 2, no. 1 (June 3, 2009): 33–48. Accessed September 28, 2025. https://etech.sc.senai.br/revista-cientifica/article/view/47.