Somani, L. L., M. S. Shaktawat, P. C. Kanthaliya, and K. L. Totawat. 2002. “Use of Low Grade Pyrite As Soil Amendment and Plant Nutrient Source”. Indian Science Cruiser 16 (1):38-48. https://informaticsjournals.co.in/index.php/ISC/article/view/42229.