@article{articleeae604fd,
title   = {Distribution, mineralogy, petrography, provenance and significance of Permian ash-carrying deposits in the Paraná Basin},
author = {Coutinho, José Moacyr Vianna and Hachiro, Jorge},
year = {2005},
doi = {10.5327/s1519-874x2005000100003},
journal   = {Geologia USP. Série Científica}
}