Srivastava, Anita, and K. S. Bhandari. “Oxidative Ammonolysis of Wheat Straw Lignosulphonate : A Source of Nitrogenous Fertilizew Soil Conditioner”. Indian Forester, vol. 127, no. 6, June 2001, pp. 653-60, doi:10.36808/if/2001/v127i6/2871.