P. K. GUPTA4*, R. K. PRAJAPATI1, R.G. CHAUDHARY2, S.R. SINGH3 and. “Evaluation of Locally Available Substrates for Mass Multiplication and Self-Life of Trichoderma Harzianum”. Indian Phytopathology, vol. 65, no. 3, July 2012, pp. 303-4, https://epubs.icar.org.in/index.php/IPPJ/article/view/22187.