Pear Rootstock Research in Oregon. Journal of the American Pomological Society, [S. l.], v. 29, n. 1, p. 17–19, 1975. DOI: 10.71318/apom.1975.29.1.17. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1205. Acesso em: 8 feb. 2026.