Singh, A. K. “Synthesis of 4-Aryl-3-Ethoxycarbonyl-1-Oxo-1,2,3,4-Tetrahydronaphthalene: An Imporant Frame Work in Lignan Family”. Journal of Nepal Chemical Society, vol. 27, no. 1, Aug. 2012, pp. 86-93, doi:10.3126/jncs.v27i1.6666.