参考文献:
Demont, Emmanuel Hubert Garton, Neil Stuart Gosmini, Romain Luc Marie Hayhow, Thomas George Christopher Seal, Jonathan Wilson, David Matthew Woodrow, Michael David Patent: US1/8798 A1, 1
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Keith, John M. Barbier, Ann J. Wilson, Sandy J. Miller, Kirstin Boggs, Jamin D. Fraser, Ian C. Mazur, Curt Lovenberg, Timothy W. Carruthers, Nicholas I. Bioorganic and Medicinal Chemistry Letters, 7 , vol. 17, # 19 p. 535 - 539