http://www.ajnr.org/content/ajnr/30/10/1893.full.pdf (Publisher version)
Eichler, F., Grodd, W., Grant, E., Sessa, M., Biffi, A., Bley, A., et al. (2009). Metachromatic Leukodystrophy: A Scoring System for Brain MR Imaging Observations. American Journal of Neuroradiology, 30(10), 1893-1897. doi:10.3174/ajnr.A1739.