Castro, I.R. and Lima, G. Ângela B. de O. 2021. Use of the universal decimal classification for the recovery of information in digital environments: a systematic review of literature. Informação & Informação. 26, 1 (Mar. 2021), 550–573. DOI:https://doi.org/10.5433/1981-8920.2021v26n1p550.