Griffiths, W., Lindh, I., Sjövall, J., Bergman, T., & Griffiths, W. (1998). Negative-ion electrospray tandem mass spectrometry of peptides derivatized with 4-aminonaphthalenesulphonic acid. Journal of Mass Spectrometry, 33(10), pp. 988-993. doi:10.1002/(SICI)1096-9888(1998100)33:10<988::AID-JMS713>3.0.CO;2-S

Griffiths, William, I. Lindh, J. Sjövall, T. Bergman, and W.J Griffiths. "Negative-ion Electrospray Tandem Mass Spectrometry of Peptides Derivatized With 4-aminonaphthalenesulphonic Acid." Journal of Mass Spectrometry 33, no. 10 (1998): 988-993.

Griffiths, William, et al. "Negative-ion Electrospray Tandem Mass Spectrometry of Peptides Derivatized With 4-aminonaphthalenesulphonic Acid." Journal of Mass Spectrometry 33.10 (1998): 988-993.