Bioprospecting at former mining sites across Europe: Microbial and functional diversity in soils, Sprocati, A.R., Alisi Chiara, Tasso Flavia, Fiore Alessia, Marconi P., Langella F., Haferburg G., Nicoara A., Neagoe A., and Kothe E. , Environmental Science and Pollution Research, Volume 21, Number 11, p.6824-6835, (2014)