Heghedűş-Mîndru, G., R. C. Heghedűş-Mîndru, P. Negrea, D. S. Ştef, R. L. Şumălan, and L. M. Rusnac. “Quantitative Determination by Atomic Absorption Spectrometry for Macro Elements of Mineral Waters from Romania”. Review on Agriculture and Rural Development, vol. 2, no. 1, Jan. 2013, pp. 245-51, https://analecta.hu/index.php/rard/article/view/13316.