Chatterjee, Ranjit, and S. Bandyopadhyay. “Studies on Effect of Organic, Inorganic and Biofertilizers on Plant Nutrient Status and Availability of Major Nutrients in Tomato”. International Journal of Bio-Resource and Stress Management, vol. 5, no. Mar, 1, Mar. 2014, pp. 093-7, https://ojs.pphouse.org/index.php/IJBSM/article/view/482.