K. S. Subramanian, et al. “Role of Arbuscular Mycorrhizal Fungus (Glomus Intraradices) – (fungus Aided) in Zinc Nutrition of Maize”. Global Journal of Plant and Soil Sciences, vol. 2, no. 1, May 2018, pp. 75-84, https://elixirpublishers.in/index.php/aab/article/view/829.