Laus, ...., Anjos, ...., Osrio, ...., Neves, ...., Laranjeira, ...., & FÆvere, .... 2008 Jun 2. Extraction of Cd(II), Cu(II), Mn(II), Ni(II) and Zn(II) using N,N,N,N-bis[(2-hydroxy-3,5-di-tert-butylbenzyl) (2-pyridylmethyl)]-ethylenediamine as ligand. Pakistan Journal of Analytical & Environmental Chemistry. [Online] 9:1