Zhilkina , E. V. and Krychevsky , E. S. (1970) "Dependence of the Electrophysical Properties of Saltpeter on Its Moisture Content", Journal of Mining Institute, 51(3), pp. 143-147. Available at: https://pmi.spmi.ru/pmi/article/view/12064 (Accessed: 18 April 2026).