Griffiths, W., Wang, Y., Alvelius, G., Liu, S., Bodin, K., & Sjövall, J. (2006). Analysis of oxysterols by electrospray tandem mass spectrometry. Journal of the American Society for Mass Spectrometry, 17(3), pp. 341-362. doi:10.1016/j.jasms.2005.10.012

Griffiths, William, Yuqin Wang, Gunvor Alvelius, Suya Liu, Karl Bodin, and Jan Sjövall. "Analysis of Oxysterols By Electrospray Tandem Mass Spectrometry." Journal of the American Society for Mass Spectrometry 17, no. 3 (2006): 341-362.

Griffiths, William, et al. "Analysis of Oxysterols By Electrospray Tandem Mass Spectrometry." Journal of the American Society for Mass Spectrometry 17.3 (2006): 341-362.