Composition #1: Glowniak, K., Mroczek, T., Zabza, A., Cierpicki, T. Isolation and structure elucidation of 5,7-disubstituted simple coumarins in the fruits of Heracleum mantegazzianum . pharmaceutical biology, 2000, vol. 38, no. 4, p. 308–312. DOI: 10.1076/1388-0209(200009)3841-AFT308.
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