Todd, John F.J. (1995). "Recommendations for nomenclature and symbolism for mass spectroscopy". International Journal of Mass Spectrometry and Ion Processes. 142 (3): 209–240. Bibcode:1995IJMSI.142..209T. doi:10.1016/0168-1176(95)93811-F.
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Todd, John F.J. (1995). "Recommendations for nomenclature and symbolism for mass spectroscopy". International Journal of Mass Spectrometry and Ion Processes. 142 (3): 209–240. Bibcode:1995IJMSI.142..209T. doi:10.1016/0168-1176(95)93811-F.