Adams, Richard D.; Qu, Xiaosu (1996). "The Chemistry of Cyclobutyne and Cyclobutenyl Ligands in Metal Cluster Complexes". Synlett. 1996 (06): 493. doi:10.1055/s-1996-5466 4 Ağustos 2020 tarihinde Wayback Machine sitesinde arşivlendi..
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Adams, Richard D.; Qu, Xiaosu (1996). "The Chemistry of Cyclobutyne and Cyclobutenyl Ligands in Metal Cluster Complexes". Synlett. 1996 (06): 493. doi:10.1055/s-1996-5466 4 Ağustos 2020 tarihinde Wayback Machine sitesinde arşivlendi..