The sources that were taken from each indexation catalog were then cross-referenced. The sources were listed and searched for within the open access portals known as Periódicos Capes and Research Gate, in addition to a direct search that was conducted using the Google search tool.
Se hizo un cruce de las referencias estudiadas en cada base que fueron listadas y buscadas en las fuentes de acceso abierto Periódicos Capes y Research Gate, además de la búsqueda directa por medio de la herramienta de Google.
Realizou-se cruzamento das referências levantadas em cada base, que foram listadas e buscadas nas fontes de acesso aberto Periódicos Capes e Research Gate, além de busca direta pela ferramenta Google.