Fujita, M. S. L. “Natural Language or Controlled Language? The Influence of the Keyword in the Representation for Indexing and Searching for Information”. Informação &Amp; Sociedade, vol. 30, no. 4, Dec. 2020, pp. 1-29, doi:10.22478/ufpb.1809-4783.2020v30n4.57041.