ANAND, R C, et al. “Effect of High Temperature Resistant Mutant of Azotobacter Chroococcum on Pearlmillet (Pennisetum Glaucum) Yield*”. The Indian Journal of Agricultural Sciences, vol. 68, no. 11, Feb. 2013, https://epubs.icar.org.in/index.php/IJAgS/article/view/27780.