TL dating of pottery fragments from four archaeological sites in Taquari Valley, Brazil - Cano, Nilo F.; Machado, Neli T G; Gennari, Roseli F; Rocca, Rene R; Munita, Casimiro Sepulveda; Watanabe, Shigueo (Radiation Effects and Defects in Solids-Incorporating Plasma Science and Plasma Technology, 2012)