S. Tangjang, A. Arunachalam, K. Arunachalam, and D. Balasubramanian, “Earthworms (<i>Perionyx excavates</i> Perr.), cowdung, and leaf residues alter soil physico-chemical and microbial properties in a traditional agroecosystem of Arunachal Pradesh”, JTA, vol. 50, no. 1, pp. 76–79, Oct. 2012.