Early Performance of Four Apple Cultivars, Supported or Free Standing, on Mark Rootstock. Journal of the American Pomological Society, [S. l.], v. 47, n. 4, p. 198–204, 1993. DOI: 10.71318/apom.1993.47.4.198. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/2031. Acesso em: 4 feb. 2026.