John R Hale

The Delphic Oracle: A Multidisciplinary Defense of the Gaseous Vent Theory

Henry A Spiller, John R Hale, Jelle Z De Boer, 2002, Journal of toxicology. Clinical toxicology.

Gaseous emissions at the site of the Delphic Oracle: Assessing the ancient evidence

John R Hale, Henry Spiller, Jella de Boer, 2008, Clinical toxicology.