Pižl, V., Schlaghamersky, J. and Tříska, J. (2010) “The effects of polycyclic aromatic hydrocarbons and heavy metals on terrestrial annelids in urban soils”, Pesquisa Agropecuaria Brasileira, 44(8), pp. 1050–1055. doi: 10.1590/S1678-3921.pab2009.v44.1373.