1. Elgin, S. C., and Reuter, G. (2013) Position-effect variegation, heterochromatin formation, and gene silencing in Drosophila, Cold Spring Harb. Perspect. Biol., 5, a017780, doi: 10.1101/cshperspect.a017780.
2. Weiler, K. S., and Wakimoto, B. T. (1995) Heterochromatin and gene expression in Drosophila, Annu. Rev. Genet., 29, 577-605, doi: 10.1146/annurev.ge.29.120195.003045.
3. Spofford, J. B. (1976) Position-effect variegation in Drosophila, in The Genetics and Biology of Drosophila, Academic press, p. 955.
4. Csink, A. K., Bounoutas, A., Griffith, M. L., Sabl, J. F., and Sage, B. T. (2002) Differential gene silencing by trans-heterochromatin in Drosophila melanogaster, Genetics, 160, 257-269.
5. Martin-Morris, L. E., Csink, A. K., Dorer, D. R., Talbert, P. B., and Henikoff, S. (1997) Heterochromatic trans-inactivation of Drosophila white transgenes, Genetics, 147, 671-677.