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Haynes, William M.; Lide, David R.; Bruno, Thomas J. (2014). "3". CRC Handbook of Chemistry and Physics (95th ed.). Boca Raton, Florida: CRC Press. p. 340. ISBN9781482208689. OCLC908078665.
Gao, Yuan; Xu, Hongyu; Lu, Zhenming; Xu, Zhenghong (November 2009). "Quantitative determination of steroids in the fruiting bodies and submerged-cultured mycelia of Inonotus obliquus". Se Pu. 27 (6): 745–749. ISSN1000-8713. PMID20352924.