R. RajaRajeswari, S. Sathiyanarayanan, A. Ramesh, and S. Ayyappan, “Evaluation of Bioavailability of Residues of Pretilachlor in soil and Water under Paddy Cropping Condition and their In!uence on Lemna gibba”, J. Agric. & Environ., vol. 14, pp. 102–110, Dec. 2013.