RAJBIR SINGH, LAKSHMI TEWARI* and. “Biological Control of Sheath Blight of Rice by Trichoderma Harzianum Using Different Delivery Systems”. Indian Phytopathology, vol. 58, no. 1, Mar. 2005, pp. 35-40, https://epubs.icar.org.in/index.php/IPPJ/article/view/17434.