1. The statistical analysis of compositional data;Aitchison,1986
2. Sequence stratigraphy and organic petrography applied to the study of Candiota Coalfield, RS, South Brazil;Alves;International Journal of Coal Geology,1996
3. Petrographic and geochemical study of coals from the Santa Terezinha Coalfield, Rio Grande do Sul, Brazil;Araújo;Revista Latino-Americana de Geoquimica Organica,1995
4. Annual Book of ASTM Standards, Section 5, Petroleum Products, Lubricants and Fossil Fuels, Volume 05.05 Gaseous Fuels;ASTM,1991
5. Sedimentology, sequence stratigraphy, palynology, organic petrology and geochemistry of Mannville coals in South-Central Alberta;Banerjee;Geological Survey of Canada,2002