G. E. . DAMIAN, V. . MICLE, and I. M. . SUR, “LEAD AND COPPER REMOVAL FROM MULTI-METAL CONTAMINATED SOILS THROUGH SOIL WASHING TECHNIQUE USING HUMIC SUBSTANCES AS WASHING AGENTS: THE INFLUENCE OF THE WASHING SOLUTION pH”, Studia UBB Chemia, vol. 64, no. 1, pp. 41–52, Mar. 2019.