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APA Citation
Zaki, A., Ashour, A., Mira, A., Kishikawa, A., Nakagawa, T., Zhu, Q., & Shimizu, K. (2016). biological Activities of Oleanolic Acid Derivatives from Calendula officinalis Seeds. Phytotherapy research, 30, 835–841. http://access.bl.uk/ark:/81055/vdc_100032398022.0x000034