1. Besley, G. T. N., Hoogeboom, A. J. M., Hoogeveen, A., Kleimjer, W. J. and Galjaard, H. Different gene mutations in Niemann-Pick variants.Hum. Genet. 54 (1980) 409–412
2. Bettger, W. J., Boyce, S. T., Walthall, B. J. and Ham, R. G. Rapid clonal growth and serial passage of human diploid fibroblasts in a lipid-enriched synthetic medium supplemented with epidermal growth factor, insulin and dexamethasone.Proc. Natl. Acad. Sci. (Wash). 78 (1981) 5588–5592
3. Brady, R. O. Sphingomyelin lipidosis: Niemann-Pick disease. In Stanbury, J. B., Wyngaarden, J. B., Frederickson, D. S., Goldstein, J. L. and Brown, M. S. (eds.)The Metabolic Basis of Inherited Disease, McGraw-Hill, New York, 1983, pp. 831–841
4. Cantz, M., Gehler, J. and Spanger, J. Mucolipidosis I: Increased sialic acid content and deficiency of α-N-acetylneuramidase in cultured fibroblasts.Biochem. Biophys. Res. Commun. 74 (1977) 245–252
5. Carey, W. F. and Pollard, A. C. Variability of fibroblast lysosomal acid hydrolases with reference to the detection of enzyme deficiencies.Aust. J. Exp. Biol. Med. Sci. 55 (1977) 247–252