MARTIN, Daniel E; LOPEZ JR., Juan D; LAN, Yubin. Laboratory evaluation of the GreenSeeker handheld optical sensor to variations in orientation and height above canopy. International Journal of Agricultural and Biological Engineering, [S. l.], v. 5, n. 1, p. 43–47, 2012. Disponível em: https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/572. Acesso em: 27 feb. 2026.