Gopinath, K A, and Shakir Kundu. “Evaluation of Metsulfuron-Methyl and Chlorimuron-Ethyl for Weed Control in Direct-Seeded Rice (Oryza sativa)*”. The Indian Journal of Agricultural Sciences, vol. 78, no. 5, May 2008, https://epubs.icar.org.in/index.php/IJAgS/article/view/9799.