1. American Conference of Governmental Industrial Hygienists (ACGIH) 2008 Documentation of the Threshold Limit Values and Biological Exposure Indices, Cincinnati
2. Treatment of wool for mattresses with barium chloride from the hygienic aspect;Benarelli;J. Ind. Hyg. Toxicol.,1931
3. Elementary, my dear Dr. Allen: the case of barium toxicity and Pa Ping;Bowen;Neurology,2010