Spence J.E. et al. 1988
Spence J.E., Perciaccante R.G., Greig G.M., Willard H.F., Ledbetter D.H., Hejtmancik J.F., Pollack M.S., O'Brien W.E., and Beaudet A.L., 1988. Uniparental disomy as a mechanism for human genetic disease. Am. J. Hum. Genet. 42: 217-226.