[1]N. N. Thanh, N. M. Hảo, and N. T. T. Phong, “Synthesis and structure of some α,β-unsaturated ketones from (4’-methyl-α-pyrono)[5’,6’-g](3-acetyl-4-methylcoumarin)”., VJChem, vol. 48, no. 4, Aug. 2012.