Annual Chill Unit Accumulation in the U.S. Journal of the American Pomological Society, [S. l.], v. 36, n. 3, p. 80–83, 1982. DOI: 10.71318/apom.1982.36.3.80. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1490. Acesso em: 15 feb. 2026.