Barbiéri, R.S., Terra, V.R., Rocha, J.C. and Netto, A.M. 1994. Infrared study of zirconium and hafnium α-hydroxycarboxylates. Eclética Química. 19, 1 (Dec. 1994), 129–135. DOI:https://doi.org/10.26850/1678-4618eqj.v19.1.1994.p129-135.