Singer-Sam, J., Goldstein, L., Dai, A., Gartler, S. M., & Riggs, A. D. (1992). A potentially critical Hpa II site of the X chromosome-linked PGK1 gene is unmethylated prior to the onset of meiosis of human oogenic cells.

Singer-Sam, J., L. Goldstein, A. Dai, S M. Gartler, and A D. Riggs. A Potentially Critical Hpa II Site of the X Chromosome-linked PGK1 Gene Is Unmethylated Prior to the Onset of Meiosis of Human Oogenic Cells. 1992.

Singer-Sam, J., et al. A Potentially Critical Hpa II Site of the X Chromosome-linked PGK1 Gene Is Unmethylated Prior to the Onset of Meiosis of Human Oogenic Cells. 1992.