1. Albuquerque OR (1922) Reconhecimentos geológicos no Valle do Amazonas: Brasil Serviço Geológico Mineral. Boletim 3:74–83
2. AS 2806.1 (2003) Aluminium ores – sampling. Part 1: sampling procedures. Standards Australia, Sydney/NSW, 34 pp
3. AS 2806.3 (2001) Aluminium ores – sampling. Part 3: preparation of samples. Standards Australia, Sydney/NSW, 26 pp
4. AS 2806.4 (2004) Aluminium ores – sampling. Part 4: determination of heterogeneity of constitution. Standards Australia, Sydney/NSW, 8 pp
5. AS 2806.5 (2003) Aluminium ores – sampling. Part 5: methods for checking the precision of sampling. Standards Australia, Sydney/NSW, 18 pp