Kajikawa M, Yamato KT, Fukuzawa H, Sakai Y, Uchida H, Ohyama K (August 2005). "Cloning and characterization of a cDNA encoding beta-amyrin synthase from petroleum plant Euphorbia tirucalli L". Phytochemistry. 66 (15): 1759–66. Bibcode:2005PChem..66.1759K. doi:10.1016/j.phytochem.2005.05.021. PMID16005035.
Basyuni M, Oku H, Tsujimoto E, Kinjo K, Baba S, Takara K (October 2007). "Triterpene synthases from the Okinawan mangrove tribe, Rhizophoraceae". The FEBS Journal. 274 (19): 5028–42. doi:10.1111/j.1742-4658.2007.06025.x. PMID17803686.
Kajikawa M, Yamato KT, Fukuzawa H, Sakai Y, Uchida H, Ohyama K (August 2005). "Cloning and characterization of a cDNA encoding beta-amyrin synthase from petroleum plant Euphorbia tirucalli L". Phytochemistry. 66 (15): 1759–66. Bibcode:2005PChem..66.1759K. doi:10.1016/j.phytochem.2005.05.021. PMID16005035.
Kajikawa M, Yamato KT, Fukuzawa H, Sakai Y, Uchida H, Ohyama K (August 2005). "Cloning and characterization of a cDNA encoding beta-amyrin synthase from petroleum plant Euphorbia tirucalli L". Phytochemistry. 66 (15): 1759–66. Bibcode:2005PChem..66.1759K. doi:10.1016/j.phytochem.2005.05.021. PMID16005035.
Basyuni M, Oku H, Tsujimoto E, Kinjo K, Baba S, Takara K (October 2007). "Triterpene synthases from the Okinawan mangrove tribe, Rhizophoraceae". The FEBS Journal. 274 (19): 5028–42. doi:10.1111/j.1742-4658.2007.06025.x. PMID17803686.