Chemical process to separate iron oxides particles in pottery sample for EPR dating - Watanabe, Shigueo; Farias, T M B; Gennari, Roseli Fernandes; Ferraz, G M; Kunzli, R; Chubaci, José Fernando Diniz (Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 2008)