Marzari, Gabriela Quatrin, Camila Gonçalves dos Santos, and Márcia Cristina Zimmer. 2013. “Strategies to Preserve Cognitive Abilities in the Eldery: The Role of Learning a Foreign Language”. Letrônica 5 (3):103-24. https://revistaseletronicas.pucrs.br/letronica/article/view/12221.