SNYMAN, H. A. .; FOUCHÉ, H. J. .; AVENANT, P. L. .; RATSELE, C. . Frost Sensitivity of Opuntia ficus-indica and O. robusta in a Semiarid Climate of South Africa. Journal of the Professional Association for Cactus Development, [S. l.], v. 9, p. 1–21, 2007. DOI: 10.56890/jpacd.v9i.237. Disponível em: https://www.jpacd.org/jpacd/article/view/237. Acesso em: 16 oct. 2025.