COMPARETTI, A.; FEBO, P.; ORLANDO, S. A system for the real-time geo-referenced measurement of soil parameters. Bulgarian Journal of Agricultural Science, Sofia, BG, v. 19, n. 6, p. 1253–1257, 2013. Disponível em: https://agriacad.eu/ojs/index.php/bjas/article/view/6160.. Acesso em: 2 nov. 2026.