IDENTIFICATION OF TERPENE LACTONES AND FLAVONOL GLYCOSIDES IN PREPARATIONS BASED ON GINKGO BILOBA EXTRACT AND A NEW WAY OF SEMI-QUANTITATIVE DETERMINATION OF FLAVONOL GLYCOSIDES BY <SUP>1</SUP>H NMR SPECTROSCOPY Article Vasil'ev V.G., Prokop'ev A.S., Kalabin G.A. Russian Journal of Bioorganic Chemistry. Vol. 43. 2017. P. 776-782
