[1]
S. M. Kovalenko, V. I. Gusarov, O. V. Zaremba, and V. V. Zubar, “Synthesis and spectral properties of 1,3,4-oxadiazol-2-yl-coumarines containing 3,7,12-threehydroxycholic fragment”, Khark. Univ. Bull. Chem. Ser., no. 25, pp. 46-53, Dec. 2015.