Franklin, G. C., Souza, E. S., Lopes Martins, L., Da Cruz, G. F. (2012): Reservoir geochemistry applications in tar sands to identify heterogeneities: Pirambóia Formation, Paraná Basin – Brazil - Book of abstracts, 13th Latin American Congress on Organic Geochemistry (ALAGO) (Santa Marta, Colombia 2012).