4) Boltshauser E, Schinzel A, Wichmann W, Haller D, Valavanis A. Pelizaeus-Merzbacher disease: identification of heterozygotes with magnetic resonance imaging ? Hum Genet 1988; 80: 393-4.
5) Penner M W, Li K C, Gebarski S S, Allen R J. MR imaging of Pelizaeus-Merzbacher disease. J Comput Assist Tomogr 1987; 11: 591-3.