Dinh Thanh, Nguyen, and Vu Ngoc Toan. “Synthesis of Some Peracetylated Glucopyranosyl Thiosemicarbazones of Substituted 4-Formylcoumarins”. Asian Journal of Chemistry, vol. 25, no. 12, June 2013, pp. 6609-11, doi:10.14233/ajchem.2013.14385.