DAKOS, Z. ., D. . KUPKA, M. . KOVAŘÍK, K. . JABLONOVSKÁ, V. . KRIŠTÚFEK, and M. . ACHIMOVIČOVÁ. “Secondary Iron Minerals Present in AMD Sediments from Smolník Abandoned Mine”. Nova Biotechnologica Et Chimica, vol. 11, no. 2, Dec. 2012, pp. 87-92, doi:10.2478/v10296-012-0009-9.