S. Kumar Karn and S. Kumar Chakrabarti, “Simultaneous biodegradation of organic (chlorophenols) and inorganic compounds from secondary sludge of pulp and paper mill by Eisenia fetida”, Int. J. Recycl. Org. Waste Agric., vol. 4, no. 1, Feb. 2015, doi: 10.1007/s40093-015-0085-3.