G. K. Bertella, Pedro, Yuri K. Lopes, Rafael A. P. Oliveira, and Anderson C. Carniel. "The Application of Spatial Approximations to Spatial Query Processing: A Systematic Review of Literature." Anais do XXXVI SimpĆ³sio Brasileiro de Bancos de Dados, Rio de Janeiro, 2021. SBC, 2021, pp.229-240.