References
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- Tkachenko , K. G. and Zenkevich , I G. 1987 . The composition of the essential oil from fruit of some Heracleum L species. . Rastit. Resursy , 23 : 87 – 91 .
- Tkachenko , K. G. and Zenkevich , I. G. 1993 . The essential oil of the flowers of Heracleum antasiaticum Manden. grown in Russia. . J. Essent. Oil Res. , 5 : 227 – 228 .
- Tkachenko , K. G. 1993 . Constituents of essential oils from fruit of some Heracleum L species. . J. Essent. Oil. Res. , 5 : 687 – 689 .