Wolf S.E. et al. 1984
Wolf S.E., Jolly D.J., Lunnen K.D., Friedman Т., and Migeon B.R., 1984. Methylation of the hypoxanthine phosphoribosyltransferase locus on the human X-chromosome: Implications for X-chromosome inactivation. Proc. Natl. Acad. Sci. 81: 2806-2810.
