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Jöchlea, W. (1974). "Menses-Inducing Drugs: Their Role in Antique, Medieval and Renaissance Gynecology and Birth Control". Contraception. 10 (4): 425–439. doi:10.1016/0010-7824(74)90042-0. PMID4614935.
Koerper, H.; Kolls, A. L. (1999). "The Silphium Motif Adorning Ancient Libyan Coinage: Marketing a Medicinal Plant". Economic Botany. 53 (2): 133–143. doi:10.1007/BF02866492. JSTOR4256173. S2CID32144481.
Koerper, H.; Kolls, A. L. (1999). "The Silphium Motif Adorning Ancient Libyan Coinage: Marketing a Medicinal Plant". Economic Botany. 53 (2): 133–143. doi:10.1007/BF02866492. JSTOR4256173. S2CID32144481.
Miski, M.; Mabry, T. J. (1986). "New Daucane Esters from Ferula tingitana". Journal of Natural Products. 49 (4): 657–660. doi:10.1021/np50046a016. PMID3783161.
Jöchlea, W. (1974). "Menses-Inducing Drugs: Their Role in Antique, Medieval and Renaissance Gynecology and Birth Control". Contraception. 10 (4): 425–439. doi:10.1016/0010-7824(74)90042-0. PMID4614935.
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Koerper, H.; Kolls, A. L. (1999). "The Silphium Motif Adorning Ancient Libyan Coinage: Marketing a Medicinal Plant". Economic Botany. 53 (2): 133–143. doi:10.1007/BF02866492. JSTOR4256173. S2CID32144481.