Salamon, Szidónia, and János Csapó. “Composition of the mother’s Milk III. – Macro and Micro Element Contents: Review”. Acta Agraria Kaposváriensis, vol. 12, no. 1, Feb. 2008, pp. 63-89, https://journal.uni-mate.hu/index.php/aak/article/view/1903.