Pyykkö, Pekka; Riedel, Sebastian; Patzschke, Michael (2005). «Triple-Bond Covalent Radii». Chemistry: A European Journal. 11 (12): 3511–20. doi:10.1002/chem.200401299. PMID15832398.
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Pyykkö, Pekka; Riedel, Sebastian; Patzschke, Michael (2005). «Triple-Bond Covalent Radii». Chemistry: A European Journal. 11 (12): 3511–20. doi:10.1002/chem.200401299. PMID15832398.