LOVINGOOD, P. E. Computer produced choropleth maps with overlays: An aid in urban and regional analysis. The Greek Review of Social Research, [S. l.], v. 24, p. 311–319, 1975. DOI: 10.12681/grsr.436. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/ekke/article/view/7055. Acesso em: 27 apr. 2024.