Hubler K, Schwerdtfeger P. (1999). "Theoretical Studies of NMR Chemical Shifts and Vibrational Frequencies in λ3-Phosphaalkynes P≡C-R". Inorg. Chem.38: 157–164. doi:10.1021/ic9811291.
Philip P. Power (1999) π-Bonding and the Lone Pair Effect in Multiple Bonds between Heavier Main Group Elements, Chem. Rev. 99(12):3463-3503, esp. 3491, ver [1]Arquivado 20 de outubro de 2016 en Wayback Machine., accessed 2 July 2014.
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Philip P. Power (1999) π-Bonding and the Lone Pair Effect in Multiple Bonds between Heavier Main Group Elements, Chem. Rev. 99(12):3463-3503, esp. 3491, ver [1]Arquivado 20 de outubro de 2016 en Wayback Machine., accessed 2 July 2014.