Hroboňová, K. ., A. . Špačková, and M. Ondáková. “Application of Solid-Phase Extraction for Isolation of Coumarins from Wine Samples”. Nova Biotechnologica Et Chimica, vol. 18, no. 1, Aug. 2019, pp. 37–43, doi:10.2478/nbec-2019-0005.