1. Chemistry, mineralogy and origin of the clay-hill nitrate deposits, Amargosa River valley, Death Valley region, California, U.S.A.
2. The Chilean Nitrate Deposits: The origin of the Chilean nitrate deposits, which contain a unique group of saline minerals, has provoked lively discussion for more than 100 years;Ericksen;Am. Sci.,1983
3. Sodium Nitrate and Nitrite;Pokorny,2006
4. Mineral commodity summaries 2015
5. Reduction of Perchlorate Levels of Sodium and Potassium Nitrates Derived from Natural Caliche Ore;Lauterbach,2004