@inproceedings{inproceedingsa835fa6a,
title   = {U-Pb age of the tonsteins of candiota coalfield, southernmost Brazil},
author = {Matos, Sérgio Luís Fabris de and Yamamoto, Jorge Kazuo and Tassinari, Colombo Celso Gaeta},
year = {2000},
publisher = {CPRM},
booktitle   = {International Geological Congress}
}