O. PINTILIE, M. ZAHARIA, L. TUDORACHI, S. BĂNCILĂ, G. DROCHIOIU, and I. SANDU, “Emphasizing the Toxicity of Heavy Metal Ions on Plants: Monitoring with an Amino Acids Assay”, The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, vol. 37, no. 1, pp. 51-56, Mar. 2014.