Mihirlal Roy, Sibani Saha, Sibani Saha, and Jhuma Das. “Search for Nodulation in Rice: Research Trends”. International Journal of Research in BioSciences (IJRBS), vol. 6, no. 2, Oct. 2020, pp. 1-8, http://ijrbs.in/index.php/ijrbs/article/view/300.