CSIGAI, K.; HROTKÓ, K. Growth and productivity of a young apple orchard at different spacing. International Journal of Horticultural Science, [S. l.], v. 11, n. 2, p. 23–27., 2005. DOI: 10.31421/IJHS/11/2/572. Disponível em: https://ojs.lib.unideb.hu/IJHS/article/view/572. Acesso em: 21 apr. 2021.