[1]N. N. Thanh and N. M. Thao, “Synthesis of some 2-aryl-4-(7’-hydroxy-4’-methyl-coumarin-6’(or-8’)-yl)-2,3-dihydro-1H-1,5-benzodiazepines”., VJChem, vol. 48, no. 5, Aug. 2012.