Ito H, Miyake M, Nishitani E, Mori K, Hatano T, Okuda T, Konoshima T, Takasaki M, Kozuka M, Mukainaka T, Tokuda H, Nishino H, Yoshida T (August 1999). "Anti-tumor promoting activity of polyphenols from Cowania mexicana and Coleogyne ramosissima". Cancer Lett. 143 (1): 5–13. doi:10.1016/S0304-3835(99)00160-3. PMID10465331.
Ito H, Miyake M, Nishitani E, Mori K, Hatano T, Okuda T, Konoshima T, Takasaki M, Kozuka M, Mukainaka T, Tokuda H, Nishino H, Yoshida T (August 1999). "Anti-tumor promoting activity of polyphenols from Cowania mexicana and Coleogyne ramosissima". Cancer Lett. 143 (1): 5–13. doi:10.1016/S0304-3835(99)00160-3. PMID10465331.