NAGY, P. T.; GONDA, I.; DREMÁK, P.; HOLB, I. J. Study on the micronutrient content of soil and leaf of an organic apple orchard in Eastern Hungary. International Journal of Horticultural Science, [S. l.], v. 12, n. 3, p. 7–11., 2006. DOI: 10.31421/IJHS/12/3/650. Disponível em: https://ojs.lib.unideb.hu/IJHS/article/view/650. Acesso em: 14 may. 2021.