The actual content of zinc and copper trace elements in the food intake of the children at preschool educational institutions in Kyiv. Environment & Health, [S. l.], v. 75, n. 4, p. 47–50, 2015. Disponível em: https://www.dovkil-zdorov.kiev.ua/journal/article/view/585. Acesso em: 3 may. 2026.