Composition #1: Stefanović, M., Djermanović, V., Gorunvić, M., Djermanović, M., Macura, S., Milosavljević, S. Sesquiterpene lactones from Achillea abrotanoides. phytochemistry, 1989, vol. 28, no. 6, p. 1765–1767. DOI: 10.1016/S0031-9422(00)97843-9.
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