Tomatsu S. ea, 1992
Tomatsu S., Fukuda S., Masue M. et al. Mucopolysaccharidoses type IVA: characterization and chromosomal localization of N-acetylgalactosamine-6-sulfate sulfatase gene and genetic heterogeneity //Amer. J. Hum. Genet. - 1992. - Vol.51 (suppl.). - P.A178 .