Gerhard Hilt , Thomas Vogler, Wilfried Hess, Fabrizio Galbiati. A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes. Chemical Communications(英语:ChemComm). 2005, 2005 (11): 1474–1475. PMID 15756340. doi:10.1039/b417832g.
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Gerhard Hilt , Thomas Vogler, Wilfried Hess, Fabrizio Galbiati. A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes. Chemical Communications(英语:ChemComm). 2005, 2005 (11): 1474–1475. PMID 15756340. doi:10.1039/b417832g.
Gerhard Hilt , Thomas Vogler, Wilfried Hess, Fabrizio Galbiati. A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes. Chemical Communications(英语:ChemComm). 2005, 2005 (11): 1474–1475. PMID 15756340. doi:10.1039/b417832g.