Quantitation of the Flavonols Quercetin and Kaempferol in the Leaves of Trigonella foenum-graecum by High-Performance Liquid Chromatography–Diode Array Detection - Gikas, Evagelos; Bazoti, Fotini N; Papadopoulos, Nikolaos; Alesta, Alexandra; Economou, Garyfalia; Tsarbopoulos, Anthony (Analytical letters, 2011)