Composition #1: Kowalczyk, Mariusz., Masullo, Milena., Thiem, Barbara., Piacente, Sonia., Stochmal, Anna., Oleszek, Wieslaw. Three new triterpene saponins from roots of Eryngium planum. NATURAL PRODUCT RESEARCH, 2014, vol. 28, no. 9, p. 653–660. DOI: 10.1080/14786419.2014.895722.
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