Castorina, Francesca, et al. “TRACE ELEMENTS AND Sr-Nd ISOTOPES IN AQUA REGIA EXTRACTS TO ASSESS POLLUTION IN URBAN AND FARMLAND SOILS FROM RAVENNA (ITALY)”. EQA - International Journal of Environmental Quality, vol. 4, no. 4, Jan. 2010, pp. 53-62, doi:10.6092/issn.2281-4485/3795.