Laus, RogØrio, 		Anjos, Ademir dos, 		Osrio, Renata E.H.M.B., 		Neves, Ademir, 		Laranjeira, Mauro C. M., AND 		FÆvere, Valfredo T. de.
"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" <em>Pakistan Journal of Analytical &amp; Environmental Chemistry</em> [Online], Volume 9 Number 1 (2 June 2008)