K. Susan John and R. T. Remya Raj, “Effect of various soil amendments on soil pH and exchangeable Ca at different depths in the identification of a suitable liming material for tannia (Xanthosoma sagittifolium L. Schott) in an Ultisol, Kerala, India”, J. Root Crops, vol. 48, no. 1 & 2, pp. 26–34, Mar. 2024.