Vengavasi, Krishnapriya, and Renu Pandey. “Root Acidification, a Rapid Method of Screening Soybean Genotypes for Low-Phosphorus Stress”. The Indian Journal of Genetics and Plant Breeding, vol. 76, no. 2, Sept. 2016, https://epubs.icar.org.in/index.php/IJGPB/article/view/60645.